├── .prettierrc ├── README.md ├── arc.go ├── cache.go ├── clockpro.go ├── directcache.go ├── gen.go ├── go.mod ├── go.sum ├── lru_groupcache.go ├── lru_hashicorp.go ├── main.go ├── result.go ├── ristretto.go ├── s4lru.go ├── slru.go ├── slru └── slru.go ├── tinylfu.go ├── two_queue.go └── wtfcache.go /.prettierrc: -------------------------------------------------------------------------------- 1 | semi: false 2 | singleQuote: true 3 | proseWrap: always 4 | printWidth: 100 5 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 |

2 | 3 | All-in-one tool to optimize performance and monitor errors & logs 4 | 5 |

26 |

TLDR

27 | 28 | - TinyLFU works best for small number of keys (~ 100k). TinyLFU memory overhead can be tweaked with 29 | the 2nd argument. 30 | - Clock-pro has significantly smaller memory usage with large number of keys (~ 1m). 31 | - Segmented LRU has even smaller memory usage, but has inconsistent hit rate. 32 | - Ristretto can still be a good choice if you need additional features it provides. 33 |

34 | 35 | ``` 36 | zipfian cache=1000 keys=10000 37 | 38 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 39 | -----------------+----------+-------+---------+--------+--------- 40 | tinylfu | 0.34 | 254ms | 0.20MiB | 339363 | 660637 41 | clockpro | 0.33 | 262ms | 0.40MiB | 328143 | 671857 42 | arc | 0.32 | 455ms | 0.49MiB | 319438 | 680562 43 | ristretto | 0.32 | 436ms | 3.52MiB | 320537 | 679463 44 | directcache | 0.48 | 218ms | 0.21MiB | 481128 | 518872 45 | two-queue | 0.32 | 456ms | 0.33MiB | 316910 | 683090 46 | lru-groupcache | 0.28 | 266ms | 0.22MiB | 280730 | 719270 47 | lru-hashicorp | 0.28 | 288ms | 0.22MiB | 280377 | 719623 48 | s4lru | 0.33 | 198ms | 0.22MiB | 332599 | 667401 49 | slru | 0.33 | 300ms | 0.20MiB | 329509 | 670491 50 | wtfcache | 0.28 | 229ms | 0.19MiB | 279742 | 720258 51 | 52 | 53 | zipfian cache=1000 keys=100000 54 | 55 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 56 | -----------------+----------+-------+---------+--------+--------- 57 | tinylfu | 0.29 | 242ms | 0.18MiB | 289752 | 710248 58 | clockpro | 0.29 | 259ms | 0.41MiB | 285591 | 714409 59 | arc | 0.28 | 446ms | 0.43MiB | 283353 | 716647 60 | ristretto | 0.24 | 468ms | 3.93MiB | 236928 | 763072 61 | directcache | 0.27 | 224ms | 0.21MiB | 274123 | 725877 62 | two-queue | 0.28 | 469ms | 0.32MiB | 276276 | 723724 63 | lru-groupcache | 0.21 | 279ms | 0.21MiB | 208824 | 791176 64 | lru-hashicorp | 0.21 | 301ms | 0.22MiB | 207826 | 792174 65 | s4lru | 0.28 | 196ms | 0.22MiB | 277247 | 722753 66 | slru | 0.28 | 302ms | 0.19MiB | 276295 | 723705 67 | wtfcache | 0.21 | 244ms | 0.19MiB | 207185 | 792815 68 | 69 | 70 | zipfian cache=1000 keys=1000000 71 | 72 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 73 | -----------------+----------+-------+---------+--------+--------- 74 | tinylfu | 0.29 | 248ms | 0.18MiB | 288601 | 711399 75 | clockpro | 0.29 | 260ms | 0.41MiB | 288899 | 711101 76 | arc | 0.29 | 456ms | 0.45MiB | 287758 | 712242 77 | ristretto | 0.22 | 495ms | 0.76MiB | 218458 | 781542 78 | directcache | 0.25 | 233ms | 0.21MiB | 254150 | 745850 79 | two-queue | 0.28 | 484ms | 0.34MiB | 278537 | 721463 80 | lru-groupcache | 0.20 | 278ms | 0.22MiB | 200153 | 799847 81 | lru-hashicorp | 0.20 | 318ms | 0.21MiB | 201648 | 798352 82 | s4lru | 0.27 | 213ms | 0.21MiB | 272905 | 727095 83 | slru | 0.27 | 314ms | 0.18MiB | 270394 | 729606 84 | wtfcache | 0.20 | 245ms | 0.19MiB | 200961 | 799039 85 | 86 | 87 | zipfian cache=10000 keys=100000 88 | 89 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 90 | -----------------+----------+-------+---------+--------+--------- 91 | tinylfu | 0.41 | 281ms | 1.99MiB | 412001 | 587999 92 | clockpro | 0.41 | 432ms | 3.54MiB | 406993 | 593007 93 | arc | 0.40 | 919ms | 4.16MiB | 395673 | 604327 94 | ristretto | 0.40 | 366ms | 7.02MiB | 396708 | 603292 95 | directcache | 0.37 | 249ms | 0.77MiB | 370036 | 629964 96 | two-queue | 0.40 | 730ms | 3.13MiB | 398233 | 601767 97 | lru-groupcache | 0.37 | 364ms | 1.98MiB | 365455 | 634545 98 | lru-hashicorp | 0.36 | 425ms | 1.98MiB | 364845 | 635155 99 | s4lru | 0.39 | 313ms | 1.94MiB | 392852 | 607148 100 | slru | 0.39 | 410ms | 1.98MiB | 385549 | 614451 101 | wtfcache | 0.37 | 301ms | 1.68MiB | 365759 | 634241 102 | 103 | 104 | zipfian cache=10000 keys=1000000 105 | 106 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 107 | -----------------+----------+-------+---------+--------+--------- 108 | tinylfu | 0.37 | 314ms | 1.97MiB | 367741 | 632259 109 | clockpro | 0.36 | 338ms | 3.59MiB | 363505 | 636495 110 | arc | 0.36 | 584ms | 4.19MiB | 362503 | 637497 111 | ristretto | 0.34 | 382ms | 7.10MiB | 338357 | 661643 112 | directcache | 0.31 | 230ms | 0.76MiB | 309275 | 690725 113 | two-queue | 0.36 | 567ms | 3.21MiB | 359047 | 640953 114 | lru-groupcache | 0.30 | 329ms | 1.97MiB | 304014 | 695986 115 | lru-hashicorp | 0.30 | 354ms | 1.97MiB | 303598 | 696402 116 | s4lru | 0.33 | 223ms | 1.60MiB | 331456 | 668544 117 | slru | 0.33 | 333ms | 1.34MiB | 326529 | 673471 118 | wtfcache | 0.30 | 271ms | 1.67MiB | 303214 | 696786 119 | 120 | 121 | zipfian cache=10000 keys=10000000 122 | 123 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 124 | -----------------+----------+-------+---------+--------+--------- 125 | tinylfu | 0.36 | 277ms | 1.95MiB | 364256 | 635744 126 | clockpro | 0.36 | 302ms | 3.60MiB | 360103 | 639897 127 | arc | 0.36 | 598ms | 4.16MiB | 360572 | 639428 128 | ristretto | 0.33 | 345ms | 7.14MiB | 331305 | 668695 129 | directcache | 0.30 | 234ms | 0.75MiB | 303046 | 696954 130 | two-queue | 0.35 | 575ms | 3.24MiB | 354729 | 645271 131 | lru-groupcache | 0.30 | 321ms | 1.98MiB | 297185 | 702815 132 | lru-hashicorp | 0.30 | 352ms | 1.98MiB | 296834 | 703166 133 | s4lru | 0.33 | 219ms | 1.33MiB | 327179 | 672821 134 | slru | 0.32 | 328ms | 1.19MiB | 321550 | 678450 135 | wtfcache | 0.30 | 271ms | 1.67MiB | 298173 | 701827 136 | 137 | 138 | zipfian cache=100000 keys=1000000 139 | 140 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 141 | -----------------+----------+-------+----------+--------+--------- 142 | tinylfu | 0.46 | 465ms | 19.18MiB | 458753 | 541247 143 | clockpro | 0.46 | 480ms | 29.59MiB | 458491 | 541509 144 | arc | 0.46 | 980ms | 35.91MiB | 459607 | 540393 145 | ristretto | 0.45 | 432ms | 29.09MiB | 451846 | 548154 146 | directcache | 0.45 | 266ms | 6.24MiB | 449331 | 550669 147 | two-queue | 0.46 | 886ms | 28.82MiB | 459891 | 540109 148 | lru-groupcache | 0.45 | 450ms | 17.75MiB | 445664 | 554336 149 | lru-hashicorp | 0.45 | 496ms | 17.76MiB | 445351 | 554649 150 | s4lru | 0.40 | 284ms | 9.57MiB | 404596 | 595404 151 | slru | 0.40 | 406ms | 8.07MiB | 395499 | 604501 152 | wtfcache | 0.45 | 382ms | 14.71MiB | 445871 | 554129 153 | 154 | 155 | zipfian cache=100000 keys=10000000 156 | 157 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 158 | -----------------+----------+-------+----------+--------+--------- 159 | tinylfu | 0.41 | 458ms | 18.75MiB | 411355 | 588645 160 | clockpro | 0.41 | 445ms | 29.73MiB | 411368 | 588632 161 | arc | 0.41 | 938ms | 35.14MiB | 411948 | 588052 162 | ristretto | 0.40 | 424ms | 29.01MiB | 401787 | 598213 163 | directcache | 0.40 | 253ms | 6.38MiB | 400520 | 599480 164 | two-queue | 0.41 | 878ms | 27.71MiB | 411830 | 588170 165 | lru-groupcache | 0.40 | 441ms | 17.90MiB | 396088 | 603912 166 | lru-hashicorp | 0.40 | 459ms | 17.89MiB | 396648 | 603352 167 | s4lru | 0.38 | 252ms | 7.63MiB | 379652 | 620348 168 | slru | 0.37 | 382ms | 6.26MiB | 374019 | 625981 169 | wtfcache | 0.40 | 362ms | 14.84MiB | 396547 | 603453 170 | 171 | 172 | zipfian cache=100000 keys=100000000 173 | 174 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 175 | -----------------+----------+-------+----------+--------+--------- 176 | tinylfu | 0.41 | 416ms | 18.69MiB | 406565 | 593435 177 | clockpro | 0.41 | 447ms | 29.69MiB | 407329 | 592671 178 | arc | 0.41 | 932ms | 35.29MiB | 408391 | 591609 179 | ristretto | 0.40 | 424ms | 29.31MiB | 397395 | 602605 180 | directcache | 0.40 | 271ms | 6.38MiB | 396138 | 603862 181 | two-queue | 0.41 | 837ms | 28.69MiB | 407455 | 592545 182 | lru-groupcache | 0.39 | 448ms | 17.90MiB | 391166 | 608834 183 | lru-hashicorp | 0.39 | 466ms | 17.90MiB | 391200 | 608800 184 | s4lru | 0.38 | 262ms | 7.49MiB | 378169 | 621831 185 | slru | 0.37 | 378ms | 6.12MiB | 372687 | 627313 186 | wtfcache | 0.39 | 356ms | 14.85MiB | 391717 | 608283 187 | 188 | 189 | zipfian cache=1000000 keys=10000000 190 | 191 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 192 | -----------------+----------+-------+-----------+--------+--------- 193 | tinylfu | 0.45 | 715ms | 138.28MiB | 447743 | 552257 194 | clockpro | 0.45 | 476ms | 84.26MiB | 447792 | 552208 195 | arc | 0.45 | 764ms | 98.46MiB | 447224 | 552776 196 | ristretto | 0.41 | 446ms | 105.33MiB | 409853 | 590147 197 | directcache | 0.45 | 323ms | 40.08MiB | 447663 | 552337 198 | two-queue | 0.45 | 786ms | 98.40MiB | 447587 | 552413 199 | lru-groupcache | 0.45 | 582ms | 92.71MiB | 447619 | 552381 200 | lru-hashicorp | 0.45 | 644ms | 92.67MiB | 447984 | 552016 201 | s4lru | 0.44 | 486ms | 50.13MiB | 437228 | 562772 202 | slru | 0.43 | 620ms | 41.28MiB | 431884 | 568116 203 | wtfcache | 0.45 | 503ms | 103.43MiB | 448204 | 551796 204 | 205 | 206 | zipfian cache=1000000 keys=100000000 207 | 208 | CACHE | HIT RATE | TIME | MEMORY | HITS | MISSES 209 | -----------------+----------+-------+-----------+--------+--------- 210 | tinylfu | 0.44 | 736ms | 139.70MiB | 435255 | 564745 211 | clockpro | 0.44 | 489ms | 85.49MiB | 435297 | 564703 212 | arc | 0.44 | 787ms | 96.10MiB | 435752 | 564248 213 | ristretto | 0.40 | 452ms | 105.25MiB | 403229 | 596771 214 | directcache | 0.43 | 318ms | 40.09MiB | 434648 | 565352 215 | two-queue | 0.43 | 742ms | 96.25MiB | 434377 | 565623 216 | lru-groupcache | 0.44 | 615ms | 94.14MiB | 435035 | 564965 217 | lru-hashicorp | 0.43 | 643ms | 94.16MiB | 434901 | 565099 218 | s4lru | 0.43 | 469ms | 48.95MiB | 426663 | 573337 219 | slru | 0.42 | 583ms | 40.27MiB | 423834 | 576166 220 | wtfcache | 0.44 | 500ms | 104.45MiB | 435936 | 564064 221 | ``` 222 | 223 | To run this benchmark: 224 | 225 | ```shell 226 | go run *.go 227 | ``` 228 | -------------------------------------------------------------------------------- /arc.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import lru "github.com/hashicorp/golang-lru" 4 | 5 | type ARC struct { 6 | v *lru.ARCCache 7 | } 8 | 9 | func NewARC(size int) Cache { 10 | cache, err := lru.NewARC(size) 11 | if err != nil { 12 | panic(err) 13 | } 14 | return &ARC{ 15 | v: cache, 16 | } 17 | } 18 | 19 | func (c *ARC) Name() string { 20 | return "arc" 21 | } 22 | 23 | func (c *ARC) Set(key string) { 24 | c.v.Add(key, key) 25 | } 26 | 27 | func (c *ARC) Get(key string) bool { 28 | _, ok := c.v.Get(key) 29 | return ok 30 | } 31 | 32 | func (c *ARC) Close() {} 33 | -------------------------------------------------------------------------------- /cache.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "encoding/binary" 5 | "unsafe" 6 | ) 7 | 8 | type NewCacheFunc func(size int) Cache 9 | 10 | type Cache interface { 11 | Name() string 12 | Set(string) 13 | Get(string) bool 14 | Close() 15 | } 16 | 17 | func stringFromInt64(n int64) string { 18 | b := make([]byte, 8) 19 | binary.LittleEndian.PutUint64(b, uint64(n)) 20 | return bytesToString(b) 21 | } 22 | 23 | func bytesToString(b []byte) string { 24 | return *(*string)(unsafe.Pointer(&b)) 25 | } 26 | -------------------------------------------------------------------------------- /clockpro.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "sync" 5 | 6 | "github.com/dgryski/go-clockpro" 7 | ) 8 | 9 | type ClockPro struct { 10 | mu sync.Mutex 11 | v *clockpro.Cache 12 | } 13 | 14 | func NewClockPro(size int) Cache { 15 | return &ClockPro{ 16 | v: clockpro.New(size), 17 | } 18 | } 19 | 20 | func (c *ClockPro) Name() string { 21 | return "clockpro" 22 | } 23 | 24 | func (c *ClockPro) Set(key string) { 25 | c.mu.Lock() 26 | c.v.Set(key, key) 27 | c.mu.Unlock() 28 | } 29 | 30 | func (c *ClockPro) Get(key string) bool { 31 | c.mu.Lock() 32 | v := c.v.Get(key) 33 | c.mu.Unlock() 34 | return v != nil 35 | } 36 | 37 | func (c *ClockPro) Close() {} 38 | -------------------------------------------------------------------------------- /directcache.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "github.com/qianbin/directcache" 5 | ) 6 | 7 | type DirectCache struct { 8 | v *directcache.Cache 9 | } 10 | 11 | func NewDirectCache(size int) Cache { 12 | entrySize := 4 + 8 + 8 // hdr + klen + vlen 13 | c := directcache.New(entrySize * size) 14 | return &DirectCache{ 15 | v: c, 16 | } 17 | } 18 | 19 | func (c *DirectCache) Name() string { 20 | return "directcache" 21 | } 22 | 23 | func (c *DirectCache) Set(key string) { 24 | c.v.Set([]byte(key), []byte(key)) 25 | } 26 | 27 | func (c *DirectCache) Get(key string) bool { 28 | _, ok := c.v.Get([]byte(key)) 29 | return ok 30 | } 31 | 32 | func (c *DirectCache) Close() {} 33 | -------------------------------------------------------------------------------- /gen.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "math/rand" 5 | "time" 6 | 7 | "github.com/pingcap/go-ycsb/pkg/generator" 8 | ) 9 | 10 | type NewGeneratorFunc = func(int) Generator 11 | 12 | type Generator interface { 13 | Name() string 14 | Next() string 15 | } 16 | 17 | //------------------------------------------------------------------------------ 18 | 19 | type ScrambledZipfian struct { 20 | r *rand.Rand 21 | z *generator.ScrambledZipfian 22 | } 23 | 24 | func NewScrambledZipfian(max int) Generator { 25 | return &ScrambledZipfian{ 26 | r: rand.New(rand.NewSource(time.Now().UnixNano())), 27 | z: generator.NewScrambledZipfian(0, int64(max), generator.ZipfianConstant), 28 | } 29 | } 30 | 31 | func (g *ScrambledZipfian) Name() string { 32 | return "zipfian" 33 | } 34 | 35 | func (g *ScrambledZipfian) Next() string { 36 | return stringFromInt64(g.z.Next(g.r)) 37 | } 38 | 39 | //------------------------------------------------------------------------------ 40 | 41 | type Hotspot struct { 42 | r *rand.Rand 43 | h *generator.Hotspot 44 | } 45 | 46 | func NewHotspot(max int) Generator { 47 | return &Hotspot{ 48 | r: rand.New(rand.NewSource(time.Now().UnixNano())), 49 | h: generator.NewHotspot(0, int64(max), 0.1, 0.9), 50 | } 51 | } 52 | 53 | func (g *Hotspot) Name() string { 54 | return "hostspot(0.1, 0.9)" 55 | } 56 | 57 | func (g *Hotspot) Next() string { 58 | return stringFromInt64(g.h.Next(g.r)) 59 | } 60 | 61 | //------------------------------------------------------------------------------ 62 | 63 | type Uniform struct { 64 | r *rand.Rand 65 | h *generator.Uniform 66 | } 67 | 68 | func NewUniform(max int) Generator { 69 | return &Uniform{ 70 | r: rand.New(rand.NewSource(time.Now().UnixNano())), 71 | h: generator.NewUniform(0, int64(max)), 72 | } 73 | } 74 | 75 | func (g *Uniform) Name() string { 76 | return "uniform" 77 | } 78 | 79 | func (g *Uniform) Next() string { 80 | return stringFromInt64(g.h.Next(g.r)) 81 | } 82 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module go-cache-benchmark 2 | 3 | go 1.18 4 | 5 | require ( 6 | github.com/dgraph-io/ristretto v0.0.3 7 | github.com/dgryski/go-clockpro v0.0.0-20140817124034-edc6d3eeb96e 8 | github.com/dgryski/go-s4lru v0.0.0-20150401095600-fd9b33c61bfe 9 | github.com/dgryski/go-tinylfu v0.0.0-20210109191853-fba88f4a7f91 10 | github.com/golang/groupcache v0.0.0-20191027212112-611e8accdfc9 11 | github.com/hashicorp/golang-lru v0.5.1 12 | github.com/irr123/wtfcache v0.0.1 13 | github.com/olekukonko/tablewriter v0.0.5 14 | github.com/pingcap/go-ycsb v0.0.0-20210129115622-04d8656123e4 15 | github.com/qianbin/directcache v0.9.1 16 | ) 17 | 18 | require ( 19 | github.com/cespare/xxhash v1.1.0 // indirect 20 | github.com/cespare/xxhash/v2 v2.1.2 // indirect 21 | github.com/dgryski/go-metro v0.0.0-20200812162917-85c65e2d0165 // indirect 22 | github.com/magiconair/properties v1.8.0 // indirect 23 | github.com/mattn/go-runewidth v0.0.10 // indirect 24 | github.com/pingcap/errors v0.11.1 // indirect 25 | github.com/pkg/errors v0.9.1 // indirect 26 | github.com/rivo/uniseg v0.2.0 // indirect 27 | github.com/stretchr/testify v1.7.0 // indirect 28 | gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect 29 | ) 30 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 2 | cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 3 | cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= 4 | cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= 5 | cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= 6 | cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= 7 | cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= 8 | cloud.google.com/go v0.49.0/go.mod h1:hGvAdzcWNbyuxS3nWhD7H2cIJxjRRTRLQVB0bdputVY= 9 | cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o= 10 | cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE= 11 | cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I= 12 | cloud.google.com/go/spanner v1.1.0/go.mod h1:TzTaF9l2ZY2CIetNvVpUu6ZQy8YEOtzB6ICa5EwYjL0= 13 | cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw= 14 | dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= 15 | github.com/AndreasBriese/bbloom v0.0.0-20180913140656-343706a395b7/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8= 16 | github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 17 | github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= 18 | github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE= 19 | github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU= 20 | github.com/XiaoMi/pegasus-go-client v0.0.0-20181029071519-9400942c5d1c/go.mod h1:KcL6D/4RZ8RAYzQ5gKI0odcdWUmCVlbQTOlWrhP71CY= 21 | github.com/aerospike/aerospike-client-go v1.35.2/go.mod h1:zj8LBEnWBDOVEIJt8LvaRvDG5ARAoa5dBeHaB472NRc= 22 | github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= 23 | github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= 24 | github.com/apache/thrift v0.0.0-20171203172758-327ebb6c2b6d/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ= 25 | github.com/apple/foundationdb/bindings/go v0.0.0-20200112054404-407dc0907f4f/go.mod h1:OMVSB21p9+xQUIqlGizHPZfjK+SHws1ht+ZytVDoz9U= 26 | github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= 27 | github.com/bitly/go-hostpool v0.0.0-20171023180738-a3a6125de932/go.mod h1:NOuUCSz6Q9T7+igc/hlvDOUdtWKryOrtFyIVABv/p7k= 28 | 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h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0= 312 | google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc= 313 | google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 314 | google.golang.org/genproto v0.0.0-20181004005441-af9cb2a35e7f/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 315 | google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 316 | google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 317 | google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 318 | google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE= 319 | google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc= 320 | google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc= 321 | google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8= 322 | google.golang.org/genproto v0.0.0-20191028173616-919d9bdd9fe6/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 323 | google.golang.org/genproto v0.0.0-20191115194625-c23dd37a84c9/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 324 | google.golang.org/genproto v0.0.0-20191206224255-0243a4be9c8f/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc= 325 | google.golang.org/grpc v0.0.0-20180607172857-7a6a684ca69e/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw= 326 | google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c= 327 | google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38= 328 | google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM= 329 | google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg= 330 | google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY= 331 | gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw= 332 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 333 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 334 | gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 335 | gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI= 336 | gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= 337 | gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw= 338 | gopkg.in/ini.v1 v1.42.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k= 339 | gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k= 340 | gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo= 341 | gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= 342 | gopkg.in/tomb.v2 v2.0.0-20161208151619-d5d1b5820637/go.mod h1:BHsqpu/nsuzkT5BpiH1EMZPLyqSMM8JbIavyFACoFNk= 343 | gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74= 344 | gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 345 | gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 346 | gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 347 | gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo= 348 | gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= 349 | honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 350 | honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 351 | honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 352 | honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 353 | honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg= 354 | rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8= 355 | -------------------------------------------------------------------------------- /lru_groupcache.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "sync" 5 | 6 | "github.com/golang/groupcache/lru" 7 | ) 8 | 9 | type GroupCacheLRU struct { 10 | mu sync.Mutex 11 | v *lru.Cache 12 | } 13 | 14 | func NewGroupCacheLRU(size int) Cache { 15 | return &GroupCacheLRU{ 16 | v: lru.New(size), 17 | } 18 | } 19 | 20 | func (c *GroupCacheLRU) Name() string { 21 | return "lru-groupcache" 22 | } 23 | 24 | func (c *GroupCacheLRU) Set(key string) { 25 | c.mu.Lock() 26 | c.v.Add(key, key) 27 | c.mu.Unlock() 28 | } 29 | 30 | func (c *GroupCacheLRU) Get(key string) bool { 31 | c.mu.Lock() 32 | _, ok := c.v.Get(key) 33 | c.mu.Unlock() 34 | return ok 35 | } 36 | 37 | func (c *GroupCacheLRU) Close() {} 38 | -------------------------------------------------------------------------------- /lru_hashicorp.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import lru "github.com/hashicorp/golang-lru" 4 | 5 | type HashicorpLRU struct { 6 | v *lru.Cache 7 | } 8 | 9 | func NewHashicorpLRU(size int) Cache { 10 | cache, err := lru.New(size) 11 | if err != nil { 12 | panic(err) 13 | } 14 | return &HashicorpLRU{ 15 | v: cache, 16 | } 17 | } 18 | 19 | func (c *HashicorpLRU) Name() string { 20 | return "lru-hashicorp" 21 | } 22 | 23 | func (c *HashicorpLRU) Set(key string) { 24 | c.v.Add(key, key) 25 | } 26 | 27 | func (c *HashicorpLRU) Get(key string) bool { 28 | _, ok := c.v.Get(key) 29 | return ok 30 | } 31 | 32 | func (c *HashicorpLRU) Close() {} 33 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "runtime" 5 | "time" 6 | ) 7 | 8 | type Benchmark struct { 9 | Generator 10 | N int 11 | } 12 | 13 | func main() { 14 | cacheSize := []int{1e3, 10e3, 100e3, 1e6} 15 | multiplier := []int{10, 100, 1000} 16 | newCache := []NewCacheFunc{ 17 | NewTinyLFU, 18 | NewClockPro, 19 | NewARC, 20 | NewRistretto, 21 | NewDirectCache, 22 | NewTwoQueue, 23 | NewGroupCacheLRU, 24 | NewHashicorpLRU, 25 | NewS4LRU, 26 | NewSLRU, 27 | NewWTFCache, 28 | } 29 | newGen := []NewGeneratorFunc{ 30 | NewScrambledZipfian, 31 | // NewHotspot, 32 | // NewUniform, 33 | } 34 | 35 | var results []*BenchmarkResult 36 | 37 | for _, newGen := range newGen { 38 | for _, cacheSize := range cacheSize { 39 | for _, multiplier := range multiplier { 40 | numKey := cacheSize * multiplier 41 | 42 | for _, newCache := range newCache { 43 | result := run(newGen, cacheSize, numKey, newCache) 44 | results = append(results, result) 45 | } 46 | 47 | if len(results) > 0 { 48 | printResults(results) 49 | results = results[:0] 50 | } 51 | } 52 | } 53 | } 54 | } 55 | 56 | func run(newGen NewGeneratorFunc, cacheSize, numKey int, newCache NewCacheFunc) *BenchmarkResult { 57 | gen := newGen(numKey) 58 | b := &Benchmark{ 59 | Generator: gen, 60 | N: 1e6, 61 | } 62 | 63 | alloc1 := memAlloc() 64 | cache := newCache(cacheSize) 65 | defer cache.Close() 66 | 67 | start := time.Now() 68 | hits, misses := bench(b, cache) 69 | dur := time.Since(start) 70 | 71 | alloc2 := memAlloc() 72 | 73 | return &BenchmarkResult{ 74 | GenName: gen.Name(), 75 | CacheName: cache.Name(), 76 | CacheSize: cacheSize, 77 | NumKey: numKey, 78 | 79 | Hits: hits, 80 | Misses: misses, 81 | Duration: dur, 82 | Bytes: int64(alloc2) - int64(alloc1), 83 | } 84 | } 85 | 86 | func bench(b *Benchmark, cache Cache) (hits, misses int) { 87 | for i := 0; i < b.N; i++ { 88 | value := b.Next() 89 | if cache.Get(value) { 90 | hits++ 91 | } else { 92 | misses++ 93 | cache.Set(value) 94 | } 95 | } 96 | 97 | return hits, misses 98 | } 99 | 100 | func memAlloc() uint64 { 101 | runtime.GC() 102 | var m runtime.MemStats 103 | runtime.ReadMemStats(&m) 104 | return m.Alloc 105 | } 106 | -------------------------------------------------------------------------------- /result.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "fmt" 5 | "os" 6 | "strconv" 7 | "time" 8 | 9 | "github.com/olekukonko/tablewriter" 10 | ) 11 | 12 | type BenchmarkResult struct { 13 | GenName string 14 | CacheName string 15 | CacheSize int 16 | NumKey int 17 | 18 | Hits int 19 | Misses int 20 | Duration time.Duration 21 | Bytes int64 22 | } 23 | 24 | func printResults(results []*BenchmarkResult) { 25 | res := results[0] 26 | fmt.Printf("%s cache=%d keys=%d\n\n", res.GenName, res.CacheSize, res.NumKey) 27 | 28 | var data [][]string 29 | 30 | for _, res := range results { 31 | hitRate := float64(res.Hits) / float64(res.Hits+res.Misses) 32 | ms := res.Duration.Milliseconds() 33 | 34 | data = append(data, []string{ 35 | res.CacheName, 36 | strconv.FormatFloat(hitRate, 'f', 2, 64), 37 | strconv.FormatInt(ms, 10) + "ms", 38 | formatBytes(res.Bytes), 39 | strconv.Itoa(res.Hits), 40 | strconv.Itoa(res.Misses), 41 | }) 42 | } 43 | 44 | renderTable(data) 45 | fmt.Printf("\n\n") 46 | } 47 | 48 | func renderTable(data [][]string) { 49 | table := tablewriter.NewWriter(os.Stdout) 50 | table.SetHeader([]string{"cache", "hit rate", "time", "memory", "hits", "misses"}) 51 | table.SetColumnAlignment([]int{ 52 | tablewriter.ALIGN_LEFT, 53 | tablewriter.ALIGN_RIGHT, 54 | tablewriter.ALIGN_RIGHT, 55 | tablewriter.ALIGN_RIGHT, 56 | tablewriter.ALIGN_RIGHT, 57 | tablewriter.ALIGN_RIGHT, 58 | }) 59 | table.SetBorder(false) 60 | table.AppendBulk(data) 61 | table.Render() 62 | } 63 | 64 | func formatBytes(n int64) string { 65 | if n < 0 { 66 | return "-" 67 | } 68 | return strconv.FormatFloat(float64(n)/1024/1024, 'f', 2, 64) + "MiB" 69 | } 70 | -------------------------------------------------------------------------------- /ristretto.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "github.com/dgraph-io/ristretto" 4 | 5 | type Ristretto struct { 6 | v *ristretto.Cache 7 | } 8 | 9 | func NewRistretto(size int) Cache { 10 | cache, err := ristretto.NewCache(&ristretto.Config{ 11 | NumCounters: int64(size * 10), 12 | MaxCost: int64(size), 13 | BufferItems: 64, 14 | }) 15 | if err != nil { 16 | panic(err) 17 | } 18 | 19 | return &Ristretto{ 20 | v: cache, 21 | } 22 | } 23 | 24 | func (c *Ristretto) Name() string { 25 | return "ristretto" 26 | } 27 | 28 | func (c *Ristretto) Set(key string) { 29 | c.v.Set(key, key, 1) 30 | } 31 | 32 | func (c *Ristretto) Get(key string) bool { 33 | _, ok := c.v.Get(key) 34 | return ok 35 | } 36 | 37 | func (c *Ristretto) Close() { 38 | c.v.Close() 39 | } 40 | -------------------------------------------------------------------------------- /s4lru.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "sync" 5 | 6 | "github.com/dgryski/go-s4lru" 7 | ) 8 | 9 | type S4LRU struct { 10 | mu sync.Mutex 11 | v *s4lru.Cache 12 | } 13 | 14 | func NewS4LRU(size int) Cache { 15 | return &S4LRU{ 16 | v: s4lru.New(size), 17 | } 18 | } 19 | 20 | func (c *S4LRU) Name() string { 21 | return "s4lru" 22 | } 23 | 24 | func (c *S4LRU) Set(key string) { 25 | c.mu.Lock() 26 | c.v.Set(key, key) 27 | c.mu.Unlock() 28 | } 29 | 30 | func (c *S4LRU) Get(key string) bool { 31 | c.mu.Lock() 32 | _, ok := c.v.Get(key) 33 | c.mu.Unlock() 34 | return ok 35 | } 36 | 37 | func (c *S4LRU) Close() {} 38 | -------------------------------------------------------------------------------- /slru.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "go-cache-benchmark/slru" 5 | "sync" 6 | ) 7 | 8 | type SLRU struct { 9 | mu sync.Mutex 10 | v *slru.Cache 11 | } 12 | 13 | func NewSLRU(size int) Cache { 14 | return &SLRU{ 15 | v: slru.New(int(float64(size)*0.2), int(float64(size)*0.8)), 16 | } 17 | } 18 | 19 | func (c *SLRU) Name() string { 20 | return "slru" 21 | } 22 | 23 | func (c *SLRU) Set(key string) { 24 | c.mu.Lock() 25 | c.v.Set(key, key) 26 | c.mu.Unlock() 27 | } 28 | 29 | func (c *SLRU) Get(key string) bool { 30 | c.mu.Lock() 31 | v := c.v.Get(key) 32 | c.mu.Unlock() 33 | return v != nil 34 | } 35 | 36 | func (c *SLRU) Close() {} 37 | -------------------------------------------------------------------------------- /slru/slru.go: -------------------------------------------------------------------------------- 1 | // https://github.com/dgryski/trifles/tree/master/cachetest/slru 2 | 3 | package slru 4 | 5 | import "github.com/golang/groupcache/lru" 6 | 7 | type Cache struct { 8 | once *lru.Cache 9 | twice *lru.Cache 10 | } 11 | 12 | func New(oncecap, twicecap int) *Cache { 13 | c := &Cache{ 14 | once: lru.New(oncecap), 15 | twice: lru.New(twicecap), 16 | } 17 | // make sure keys evicted from two make it to the head of one 18 | c.twice.OnEvicted = func(k lru.Key, v interface{}) { 19 | c.once.Add(k, v) 20 | } 21 | return c 22 | } 23 | 24 | func (c *Cache) Get(key string) interface{} { 25 | val, ok := c.once.Get(key) 26 | 27 | if !ok { 28 | val, _ = c.twice.Get(key) 29 | return val 30 | } 31 | 32 | c.once.Remove(key) 33 | c.twice.Add(key, val) 34 | return val 35 | } 36 | 37 | func (c *Cache) Set(key string, value interface{}) { 38 | c.once.Add(key, value) 39 | } 40 | -------------------------------------------------------------------------------- /tinylfu.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "sync" 5 | 6 | "github.com/dgryski/go-tinylfu" 7 | ) 8 | 9 | type TinyLFU struct { 10 | mu sync.Mutex 11 | v *tinylfu.T 12 | } 13 | 14 | func NewTinyLFU(size int) Cache { 15 | return &TinyLFU{ 16 | v: tinylfu.New(size, size*10), 17 | } 18 | } 19 | 20 | func (c *TinyLFU) Name() string { 21 | return "tinylfu" 22 | } 23 | 24 | func (c *TinyLFU) Set(key string) { 25 | c.mu.Lock() 26 | c.v.Add(key, key) 27 | c.mu.Unlock() 28 | } 29 | 30 | func (c *TinyLFU) Get(key string) bool { 31 | c.mu.Lock() 32 | _, ok := c.v.Get(key) 33 | c.mu.Unlock() 34 | return ok 35 | } 36 | 37 | func (c *TinyLFU) Close() {} 38 | -------------------------------------------------------------------------------- /two_queue.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import lru "github.com/hashicorp/golang-lru" 4 | 5 | type TwoQueue struct { 6 | v *lru.TwoQueueCache 7 | } 8 | 9 | func NewTwoQueue(size int) Cache { 10 | cache, err := lru.New2Q(size) 11 | if err != nil { 12 | panic(err) 13 | } 14 | return &TwoQueue{ 15 | v: cache, 16 | } 17 | } 18 | 19 | func (c *TwoQueue) Name() string { 20 | return "two-queue" 21 | } 22 | 23 | func (c *TwoQueue) Set(key string) { 24 | c.v.Add(key, key) 25 | } 26 | 27 | func (c *TwoQueue) Get(key string) bool { 28 | _, ok := c.v.Get(key) 29 | return ok 30 | } 31 | 32 | func (c *TwoQueue) Close() {} 33 | -------------------------------------------------------------------------------- /wtfcache.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "github.com/irr123/wtfcache" 5 | ) 6 | 7 | type WTFCache struct { 8 | v *wtfcache.LRUWithLock[string, string] 9 | } 10 | 11 | func NewWTFCache(size int) Cache { 12 | return &WTFCache{ 13 | v: wtfcache.New[string, string]().MakeWithLock(size), 14 | } 15 | } 16 | 17 | func (c *WTFCache) Name() string { 18 | return "wtfcache" 19 | } 20 | 21 | func (c *WTFCache) Set(key string) { 22 | c.v.Set(key, key) 23 | } 24 | 25 | func (c *WTFCache) Get(key string) bool { 26 | _, ok := c.v.Get(key) 27 | return ok 28 | } 29 | 30 | func (c *WTFCache) Close() {} 31 | --------------------------------------------------------------------------------