Serializing Per-Key Edge State with Cloudflare Workers Durable Objects
Durable Objects serialize mutations for a single object ID at the edge, preventing lost updates without an external lock.
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cloudflareworkersDurable Objects for Per-Entity State in Cloudflare Workers: An Architecture Note
Use Durable Objects when a single entity needs serialized writes and read-after-write consistency. This note covers trust boundaries, single-region data homing, operational checks, and when to choose KV, R2, or D1 instead.
Stateful Edge Logic Without a Database Roundtrip: Durable Objects in Practice
Durable Objects give serialized, strongly consistent state per ID at the edge. Use them as the owner of one entity, keep state under 10 MB, and verify alarms and ID routing locally with wrangler dev.
Using Cloudflare Workers KV for Feature Flags Without Stale Reads Breaking Deploys
Coordinating feature flags at the edge means balancing fast KV reads with eventual consistency. Use Workers KV for low-latency lookups and a Durable Object as an atomic write gate when immediate consistency matters.
cloudflareUsing Cloudflare Workers Durable Objects for Consistent State in Serverless Apps
Learn how Cloudflare Workers Durable Objects provide strong consistency and low‑latency state for serverless apps, with a concrete counter example and trade‑off discussion.
KV vs Durable Objects: Decision Guide for Cloudflare Workers
When building Cloudflare Workers that need persistent state, decide between KV and Durable Objects. This guide compares consistency, latency, storage limits, pricing, and shows how to implement a counter with KV and a WebSocket session with a Durable Object.
Building a Per‑User Session Store with Cloudflare Workers and Durable Objects
Step‑by‑step guide to building a Cloudflare Worker backed by a Durable Object for per‑user session state, including setup, code, local testing, deployment, verification, and rollback.
Choosing Between Cloudflare Workers KV and Durable Objects for Stateful Workers
When a Cloudflare Worker needs mutable state, pick the right storage: KV for global, eventually consistent caching; Durable Objects for strong consistency, low‑latency per‑instance state. This guide compares options, explains trade‑offs, and shows a concrete example with validation steps.
Diagnosing Cloudflare Workers Durable Objects: State, Performance, and Concurrency
When Durable Objects lose state, lag, or lose updates, the culprit is often a mis‑configured key, cold start, or race condition. This guide walks through common symptoms, ordered checks, quick fixes, and escalation steps.