Notes on distributed systems, cloud infrastructure, and backend engineering.https://alex.profir.dev/https://alex.profir.dev/blog/append-only-everywhere/https://alex.profir.dev/blog/append-only-everywhere/Append-only thinking shows up in WALs, Kafka, event sourcing, and more. Here is why immutability is such a natural fit for distributed systems.Sat, 18 Apr 2026 00:00:00 GMThttps://alex.profir.dev/blog/hello-world/https://alex.profir.dev/blog/hello-world/A personal blog about engineering, and the AI tools that help build it.Fri, 17 Apr 2026 00:00:00 GMT