Engineering notes from building an AI-infrastructure learning platform.https://blog.upstacklab.com/en-ushttps://blog.upstacklab.com/blog/redis-job-queue-enough/https://blog.upstacklab.com/blog/redis-job-queue-enough/We almost reached for Kafka. Then we counted our jobs per second and put BullMQ on Redis instead. Two years later, here is why we have not regretted it.Sun, 10 May 2026 00:00:00 GMTredisinfrastructuredistributed-systemsdevopshttps://blog.upstacklab.com/blog/write-before-publish/https://blog.upstacklab.com/blog/write-before-publish/The order in which you commit a row and publish a real-time event determines whether your UI and your database can ever disagree. Always write first.Sat, 25 Apr 2026 00:00:00 GMTpostgresreal-timedistributed-systemshttps://blog.upstacklab.com/blog/pgbouncer-transaction-mode/https://blog.upstacklab.com/blog/pgbouncer-transaction-mode/Postgres tops out at a few hundred concurrent connections. Workers and serverless handlers want thousands. Transaction-mode pooling is the cheap fix — and a small set of constraints you have to live with.Sun, 12 Apr 2026 00:00:00 GMTpostgresinfrastructuredatabases