Blog
Mert Özen's blog posts on software development, backend, frontend, and DevOps.
Running Redis in Production: ACL, TLS, Dangerous Commands, Latency Diagnosis, OpenTelemetry and Testcontainers
In production every application should connect to Redis with its own ACL user that may use only the commands, keys and channels it needs; a user without FLUSHALL, KEYS and EVAL is the first defence against Lua vulnerabilities and a leaked password. With real output: what ACL LOG reveals, moving to Functions, TLS, reading SLOWLOG and the StackExchange.Redis timeout message, OpenTelemetry spans and integration testing with Testcontainers.
From Redis 7 to Redis 8.x and Valkey 9: What's New, Where They Diverge and Migrating StackExchange.Redis 2→3
Neither Redis 7.4 nor Valkey 9 can open an RDB file written by Redis 8; Redis and Valkey share 7.2 as their common ground, and upgrades are one-way. With real measurements: RDB and replication compatibility, a summary of Redis 8.0–8.10, a compatibility table built by asking both servers with COMMAND DOCS, old APIs that are compile errors in StackExchange.Redis 3.x, and a version upgrade plan.