--- title: "Cloudflare KV: a key-value store for your Workers" url: https://daily.dev/posts/cloudflare-kv-a-key-value-store-for-your-workers-h2hh3gizy source_url: https://flaviocopes.com/cloudflare-kv type: article source: "Flavio Copes" published: 2026-06-24T11:25:52.900Z updated: 2026-06-24T11:26:12.277Z tags: ["cloudflare", "edge-computing"] reading_time: 3 upvotes: 0 comments: 0 language: 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. # Cloudflare KV: a key-value store for your Workers **[Flavio Copes](https://daily.dev/sources/flaviocopes)** · 3 min read · 0 upvotes · 0 comments ## Summary Cloudflare Workers KV is an edge key-value store that lets you store and retrieve data globally with very low read latency. The guide covers creating a KV namespace, binding it to a Worker via wrangler.jsonc, and using the put/get/delete/list API. It also covers storing JSON objects, setting TTL-based key expiration for sessions and caches, and listing keys by prefix. A key caveat: KV is optimized for read-heavy workloads — writes propagate across regions within a few seconds, making it unsuitable for data requiring immediate consistency (e.g., financial records). For those cases, Cloudflare D1 or Durable Objects are recommended. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Rate limiting with Cloudflare KV](https://daily.dev/posts/rate-limiting-with-cloudflare-kv-liexjenmf) · Flavio Copes · 0 upvotes · 0 comments - [Cloudflare D1: a SQL database for your Workers](https://daily.dev/posts/cloudflare-d1-a-sql-database-for-your-workers-kkoyuhilj) · Flavio Copes · 1 upvotes · 0 comments --- Tags: [#cloudflare](https://daily.dev/tags/cloudflare), [#edge-computing](https://daily.dev/tags/edge-computing) [View this post on daily.dev](https://daily.dev/posts/cloudflare-kv-a-key-value-store-for-your-workers-h2hh3gizy)