├── .gitignore ├── InnoDB_Behavior.graffle ├── InnoDB_Log_Structures.graffle ├── InnoDB_Structures.graffle ├── LICENSE ├── README.md └── images ├── InnoDB_Log_Structures.pdf ├── InnoDB_Log_Structures ├── Log Block.png ├── Log Checkpoint.png ├── Log File 0 Overview.png ├── Log File 1+ Overview 2.png ├── Log File Header.png ├── Log Group Structure.png ├── Log Record MLOG_COMP_REC_INSERT.png ├── Log Record MLOG_nBYTE 2.png ├── Log Record MLOG_nBYTE.png └── Log Record Overview.png ├── InnoDB_Structures.pdf └── InnoDB_Structures ├── B+Tree Detailed Page Structure.png ├── B+Tree Page Directory Structure.png ├── B+Tree Record Delete 1.png ├── B+Tree Record Delete 2.png ├── B+Tree Record Initial State.png ├── B+Tree Record Update - Larger.png ├── B+Tree Record Update - Smaller.png ├── B+Tree Simplified Leaf Page.png ├── B+Tree Simplified Level.png ├── B+Tree Simplified Non-Leaf Page.png ├── B+Tree Structure.png ├── Basic Page Overview.png ├── Compressed INDEX Data 1.png ├── Compressed INDEX Data 2.png ├── Compressed INDEX Data 3.png ├── Compressed INDEX Page Directory.png ├── Compressed INDEX Page Modification Log.png ├── Compressed INDEX Page Overview.png ├── Compressed INDEX Page Trailer Data.png ├── FIL Header and Trailer.png ├── FSEG Header.png ├── FSP Header.png ├── FSP_HDR Page Overview.png ├── High-level Overview.png ├── History Structure.png ├── IBD File Overview.png ├── IBUF_BITMAP Entry.png ├── IBUF_BITMAP Page Overview.png ├── INDEX Header.png ├── INDEX Page Directory.png ├── INDEX Page Overview.png ├── INDEX System Records.png ├── INODE Entry.png ├── INODE Page Overview.png ├── Index File Segment Structure.png ├── List Base Nodes.png ├── List Nodes.png ├── Record Change Buffer Index Leaf.png ├── Record Clustered Leaf.png ├── Record Clustered Non-Leaf.png ├── Record Format - Header.png ├── Record Format - Overview.png ├── Record Header Overview.png ├── Record Header.png ├── Record History.png ├── Record Secondary Leaf.png ├── Record Secondary Non-Leaf.png ├── Rollback Pointer (ROLL_PTR).png ├── Rollback Segment Header.png ├── SYS_RSEG_HEADER Overview.png ├── Space File Overview.png ├── TRX_SYS Doublewrite Buffer Info.png ├── TRX_SYS MySQL Log Info.png ├── TRX_SYS Overview.png ├── UNDO_LOG Overview.png ├── Undo Log Header.png ├── Undo Page Header.png ├── Undo Record for Update.png ├── Undo Record.png ├── Undo Segment Header.png ├── XDES Entry.png └── ibdata1 File Overview.png /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | -------------------------------------------------------------------------------- /InnoDB_Log_Structures.graffle: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jeremycole/innodb_diagrams/6e952a74a32c3b2a4b7921b1f1a14b3e94f1f73f/InnoDB_Log_Structures.graffle -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | This software is licensed under the Revised (3-clause) BSD license as follows: 2 | 3 | Copyright (c) 2013, Twitter, Inc. 4 | Copyright (c) 2013, Jeremy Cole 5 | Copyright (c) 2013, Davi Arnaut 6 | 7 | All rights reserved. 8 | 9 | Redistribution and use in source and binary forms, with or without 10 | modification, are permitted provided that the following conditions are met: 11 | * Redistributions of source code must retain the above copyright 12 | notice, this list of conditions and the following disclaimer. 13 | * Redistributions in binary form must reproduce the above copyright 14 | notice, this list of conditions and the following disclaimer in the 15 | documentation and/or other materials provided with the distribution. 16 | * Neither the name of the nor the 17 | names of its contributors may be used to endorse or promote products 18 | derived from this software without specific prior written permission. 19 | 20 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 21 | ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 22 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23 | DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY 24 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 25 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 27 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # InnoDB Diagrams # 2 | 3 | The purpose of this project is to build complete and understandable InnoDB internals diagrams. This project is a work in progress and should not be considered complete. These diagrams are based on intensive study of the InnoDB code in addition to re-implementation of the data structures therein in Ruby in the [innodb_ruby](http://github.com/jeremycole/innodb_ruby/) project. 4 | 5 | This work has primarily been completed by: 6 | * Jeremy Cole ([jeremycole](http://github.com/jeremycole/)) 7 | * Davi Arnaut ([darnaut](http://github.com/darnaut/)) 8 | -------------------------------------------------------------------------------- /images/InnoDB_Log_Structures.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jeremycole/innodb_diagrams/6e952a74a32c3b2a4b7921b1f1a14b3e94f1f73f/images/InnoDB_Log_Structures.pdf -------------------------------------------------------------------------------- /images/InnoDB_Log_Structures/Log Block.png: -------------------------------------------------------------------------------- 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