--- title: Agent State Management: Redis vs Postgres for AI Memory description: Long-running AI agents need persistent state beyond the context window. Redis excels at working memory with sub-millisecond reads and TTL-based cleanup, while... canonical: https://daily.dev/posts/agent-state-management-redis-vs-postgres-for-ai-memory-6f36iuftz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Agent State Management: Redis vs Postgres for AI Memory | daily.dev og:description: Long-running AI agents need persistent state beyond the context window. Redis excels at working memory with sub-millisecond reads and TTL-based cleanup, while... og:url: https://daily.dev/posts/agent-state-management-redis-vs-postgres-for-ai-memory-6f36iuftz og:image: https://api.daily.dev/og/posts/6F36IUFTZ.png og:image:alt: Agent State Management: Redis vs Postgres for AI Memory 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. # Agent State Management: Redis vs Postgres for AI Memory **[SitePoint](https://daily.dev/sources/sitepoint)** · 15 min read · 1 upvotes · 0 comments ## Summary Long-running AI agents need persistent state beyond the context window. Redis excels at working memory with sub-millisecond reads and TTL-based cleanup, while Postgres with pgvector handles episodic and semantic memory with ACID durability and >94% precision@5 recall. A hybrid write-through architecture uses Redis for hot state and async consolidation to Postgres for long-term storage. Benchmarks show Redis-only degrades below 70% recall past 50 turns, while the hybrid achieves <1ms hot reads with >92% recall. Practical Python and SQL schemas, Docker Compose setup, and a decision framework for choosing between Redis-only, Postgres-only, or hybrid are included. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Agent memory as a moat: how context compounds](https://daily.dev/posts/agent-memory-as-a-moat-how-context-compounds-yklbppnd6) · Redis · 0 upvotes · 0 comments - [Why your AI agent doesn’t actually remember anything](https://daily.dev/posts/why-your-ai-agent-doesn-t-actually-remember-anything-vmftlyjpb) · The New Stack · 2 upvotes · 0 comments --- Tags: [#ai-agents](https://daily.dev/tags/ai-agents), [#pgvector](https://daily.dev/tags/pgvector), [#postgresql](https://daily.dev/tags/postgresql), [#redis](https://daily.dev/tags/redis) [View this post on daily.dev](https://daily.dev/posts/agent-state-management-redis-vs-postgres-for-ai-memory-6f36iuftz) ```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":"Agent State Management: Redis vs Postgres for AI Memory","url":"https://daily.dev/posts/agent-state-management-redis-vs-postgres-for-ai-memory-6f36iuftz","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/agent-state-management-redis-vs-postgres-for-ai-memory-6f36iuftz"},"datePublished":"2026-03-02T20:27:07.553Z","dateModified":"2026-03-15T03:55:38.174Z","description":"Long-running AI agents need persistent state beyond the context window. 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