https://appcoding.com/tags/redis/ Recent content in Redis on App Coding Hugo en-us Mon, 05 Oct 2026 00:00:00 +0000 https://appcoding.com/redis-semantics-without-redis-an-embedded-state-engine-for-counters-leases-and-ttls/ Mon, 05 Oct 2026 00:00:00 +0000 https://appcoding.com/redis-semantics-without-redis-an-embedded-state-engine-for-counters-leases-and-ttls/ <p>A command-line tool should run only one copy of its nightly export at a time. A small web app wants to cap each user at 60 requests a minute. A desktop app needs to remember when it last synced. All three are state: an integer, a timestamp, an owner. All three usually get solved by adding Redis, because Redis has the verbs for them: <code>INCR</code>, <code>SET NX PX</code>, <code>EXPIRE</code>. The app needed the verbs and got a server along with them, a port and a persistence config included.</p>