Fresh Reads

New Effect release featuring the effect/crypto modules, Glob module, streaming CSV, HttpApi Problem Details, Decision.locate, and more!

We look at idempotency and the dual-write problem, then use idempotency keys and transactions to safely handle messages that arrive more than once.

Cluster delivery in Module of the Week. Effect surpasses 50 million downloads per week. 🚀 Effect Miami scheduled for Nov 9.

We look at at-most-once and at-least-once delivery, then use persisted messages to stop Dad losing messages when a runner crashes.

Cluster messaging in Module of the Week. Released Effect 4.0.1 and 4.0.2.

Two patch releases, a round of fixes, and one gnarly mistake

It's time for a change in schedule and format. Short weekly writing is too shallow when you have AI. I am pivoting: longer, timeless, full technical overviews, once every few weeks.

We write our first entity, then follow one of its messages across a cluster to see how runners agree on who owns what.

Effect v4 is officially stable, merged live at the San Francisco meetup. 🚀 Exploring Effect Cluster in the Module of the Week series.

The final month of the RC cycle. A major runtime performance pass, systematic correctness sweeps, and the stable release of Effect 4.0.

Rebuilt from the ground up, with a dependency-free core and long-term support

The skill of writing code will become obsolete eventually, we are getting there faster and faster. And if writing code has not much value anymore, you need to shift your focus. Here is what I am doing.

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.

Discussions about code are getting less and less relevant. We reached a level above it: how to automate your entire pipeline. Here is how I am doing this.

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.

Iteration after iteration, the effect-machine API reached a more stable API. And, guess what, it looks really close to XState. Let's see an example then.

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.

State machines in effect is a question of time. I am working from multiple angles to ensure this will come, soon, sooner. Here are the latest updates of what's happening.

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.

Welcome to the new era of open source development with AI. You can move way faster, the scope can explode with ease, and you may find yourself prompting a lot. It's not easier.

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.