Fresh Reads

Cluster idempotency in Module of the Week. A big push on EventLog and a native McpClient land in Effect v4. Effect Miami 🌴 speakers announced.

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.