--- title: InnoDB Flushing is simple – explained | daily.dev description: A beginner-friendly deep dive into InnoDB flushing mechanics, covering all four flushing types: background, adaptive, LRU, and sync flushing. Explains dirty... canonical: https://daily.dev/posts/innodb-flushing-is-simple-explained-77ujhbtg8 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: InnoDB Flushing is simple – explained | daily.dev og:description: A beginner-friendly deep dive into InnoDB flushing mechanics, covering all four flushing types: background, adaptive, LRU, and sync flushing. Explains dirty... og:url: https://daily.dev/posts/innodb-flushing-is-simple-explained-77ujhbtg8 og:image: https://api.daily.dev/og/posts/77UjhBtG8.png og:image:alt: InnoDB Flushing is simple – explained og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # InnoDB Flushing is simple – explained **[Planet MySQL](https://daily.dev/sources/planet-mysql)** · 8 min read · 0 upvotes · 0 comments ## Summary A beginner-friendly deep dive into InnoDB flushing mechanics, covering all four flushing types: background, adaptive, LRU, and sync flushing. Explains dirty pages, checkpoint age, and the redo log using everyday analogies. Includes three practical diagnostic commands to detect sync flush risk, LRU flushing problems, and whether background/adaptive flushing is keeping up with writes. Provides concrete fixes like increasing innodb_redo_log_capacity, tuning innodb_io_capacity, and sizing the buffer pool appropriately. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Performance improvements in Percona Server 8.4.11-11](https://daily.dev/posts/performance-improvements-in-percona-server-8-4-11-11-mvtt2zqgb) · Planet MySQL · 0 upvotes · 0 comments - [Every fast write moves work somewhere else](https://daily.dev/posts/every-fast-write-moves-work-somewhere-else-k4xugsl0j) · Hacker News · 0 upvotes · 0 comments - [Jepsen: MariaDB Galera Cluster 12.1.2](https://daily.dev/posts/jepsen-mariadb-galera-cluster-12-1-2-rontun0uj) · Lobsters · 0 upvotes · 0 comments - [Cache consistency: strategies to keep data fresh](https://daily.dev/posts/cache-consistency-strategies-to-keep-data-fresh-o2gww6sna) · Redis · 6 upvotes · 0 comments - [How Atomic DDL Works in MySQL 8.0](https://daily.dev/posts/how-atomic-ddl-works-in-mysql-8-0-2yuwkka5t) · Planet MySQL · 0 upvotes · 0 comments --- Tags: [#mysql](https://daily.dev/tags/mysql) [View this post on daily.dev](https://daily.dev/posts/innodb-flushing-is-simple-explained-77ujhbtg8) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"InnoDB Flushing is simple – explained","url":"https://daily.dev/posts/innodb-flushing-is-simple-explained-77ujhbtg8","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/innodb-flushing-is-simple-explained-77ujhbtg8"},"datePublished":"2026-07-13T05:51:36.537Z","dateModified":"2026-07-13T05:51:59.343Z","description":"A beginner-friendly deep dive into InnoDB flushing mechanics, covering all four flushing types: background, adaptive, LRU, and sync flushing. 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