add changelogs

Author: vy-ton

src/content/changelog/durable-objects/2025-04-07-durable-objects-free-tier.mdx

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+---
+title: Durable Objects on Workers Free plan
+description: Durable Objects now available on Workers Free plan.
+products:
+  - durable-objects
+  - workers 
+date: 2025-04-07T13:00:00Z
+---
+
+Durable Objects can now be used with zero commitment on the [Workers Free plan](/workers/platform/pricing/) allowing you to build AI agents with [Agents SDK](/agents), collaboration tools, or real-time applications like chat or multiplayer games. 
+
+Durable Objects let you build stateful, serverless applications with millions of tiny coordination instances that run your application code alongside, in the same thread!, as your durable storage. Each Durable Object can access its own SQLite database through a [Storage API](/durable-objects/best-practices/access-durable-objects-storage/).
+
+Free plan [limits](/durable-objects/platform/pricing/) apply to Durable Objects compute and storage usage. Limits allow developers to build real-world applications, with every Worker request able to call a Durable Object on the free plan.
+
+For more information, checkout:
+- [Documentation](/durable-objects/what-are-durable-objects/)
+- Zero-latency SQLite storinage in every Durable Object [blog](https://blog.cloudflare.com/sqlite-in-durable-objects/)

src/content/changelog/durable-objects/2025-04-07-sqlite-in-durable-objects-ga.mdx

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+---
+title: SQLite in Durable Objects GA
+description: SQLite-bakced Durable Objects are generally available.
+products:
+  - durable-objects
+  - workers 
+date: 2025-04-07T13:00:00Z
+---
+
+SQLite in Durable Objects is now generally available (GA). Since the [beta announcement](https://blog.cloudflare.com/sqlite-in-durable-objects/) in September 2024, we've added feature parity and robustness for the SQLite storage backed compared to the key-value (KV) storage backend that Durable Objects had had before then. 
+
+SQLite-backed Durable Objects are recommended for all new Durable Object classes, using `new_sqlite_classes` [wrangler configuration](/durable-objects/best-practices/access-durable-objects-storage/#create-sqlite-backed-durable-object-class). Only SQLite-backed Durable Objects have access to Storage API's [SQL](/durable-objects/api/storage-api/#sql-api) and [point-in-time recovery](/durable-objects/api/storage-api/#pitr-point-in-time-recovery-api) methods, which provide flexible, relational data modeling, SQL access, and better data management. 
+
+KV-backend Durable Objects remain for backwards compatibility, and a migration path from key-value storage to SQL storage for existing Durable Object classes will be offered in the future.