Fresh Reads

The first in a series on Effect Cluster. We look at the actor model and how a cluster is laid out.

Module of the Week 2: RcMap. Effect v4 RC lands a major runtime performance pass across Schema, Queue, Stream, and Scope.

Learn how RcMap uses reference counting to share scoped resources by key across consumers, with automatic cleanup, idle time to live, and capacity limits.

Module of the Week series by Maxwell Brown, PersistedQueue. Cloudflare, Effect & Alchemy recognised as the winning stack with AI agents by the community.

Learn how Effect's PersistedQueue handles background jobs, multiple workers, locking, and retries.

Module of the Week is a weekly blog post that explores the lesser-known parts of Effect, one module at a time.

Astra vs The Boys: 207 PRs, three days. The Primeagen dives into Effect. Ziverge runs their first Effect training workshop.

One Queue bug, an unreasonable number of agents, and 207 pull requests in three days. A story about AI audit, human review, and a GitHub runner quota that gave up.

Kit from Anomaly unleashed Astra on Effect. Dillon will never again start another TypeScript app without Effect. Matt praising Effect docs. Effect NYC & Effect San Francisco September meetups.

Effect v4 Release Candidate announcement. Zero external dependencies in the core package. A native PostgreSQL client, pull-based Sockets, native Schema Arbitraries, and more.

Effect v4 RC's core package now has zero external dependencies, with a native PostgreSQL protocol client and reworked native Schema Arbitraries. Early Bird tickets for Effect Days close on September 1st.

Effect v4 RC lands new Match.fn selectors, RPC stream backpressure, and Schema reference policies. Foldkit ships server-side rendering. Effect gets a shoutout in this week's This Week in React newsletter.

Effect v4 Release Candidate is here! Effect Days 2026 🇮🇹 is back! A skill for Effect v3 to v4 Migration.

We think we are ready to ship. Now it's your turn.

John De Goes joins Cause & Effect Podcast #10 to talk AI, Effect primitives, and teaching Effect in the age of AI. Effect LSP rules now available as type-aware OXLint rules.

Native Deno support, a Graph module, Schedule overhaul, HttpApi hardening, a landmark repository migration, and more.

Ziverge becomes the first official Effect Adoption Partner. Talks from Effect Miami 2 on Effective State Machines, NestJS migration, and agentic runtimes.

Foldkit on the Cause & Effect podcast. We rebuilt and redesigned the Effect website.

effect-smol merged into the main repo! Kit Langton's skills for Effect v4. Crosshatch, an Effect-native x402 Clients & Merchants, by Harry Solovay.

An intro to Effect by Code and Stuff. Effect mentioned at the Next Token Show! v4 Beta: Schedule overhaul and a major Cron semantics fix.

X Live Studio fully written in Effect! Birdclaw by Peter Steinberger, built with Effect. Effect AI, Cloudflare Workers with Effect & RPC, and Schema v4 crash course from Lucas Barake.

A recap of everything that landed in the Effect v4 beta in June 2026, adaptive rate limiting, Schema performance improvements, OpenTelemetry enhancements, SQL additions, and more.