#distributedsystems

A permission broker for concurrent AI agents must do more than check whether a request is...

Your API returns a transaction hash. The customer sees “Payment sent.” An indexer finds the transfer...

Can Kafka replace Redis for cache sync across Spring Boot pods? A production pattern: compacted topic, per-pod consumer groups, readiness gating — with runnable code.

Why "just retry" creates duplicate payments, and a PostgreSQL-backed design for idempotency keys that...

I've started reading Designing Data-Intensive Applications (DDIA), and I'm going to write up what I...

Adding snapshotting to my Raft implementation exposed three defects that had been hidden by the absence of the feature. A deterministic simulator pinned the worst one to a single seed. Here's each bug from trigger to regression test.

A lot of “AI agent orchestration” diagrams quietly merge two very different...

Say a client writes a value and gets a success back. Later, the value is gone. It happens once in...

The server in charge just crashed. In the Raft authors' own tests, with fixed election timers, the...

Order 88213 needs one payment of ₹4,998. The client calls the payment service with a 2,000 ms...

On the second of June two hundred and twelve of our business customers received their May invoice...

Around 3,500 job starts failed because PostgreSQL’s WAL generation outpaced archival during routine...