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Myroslav Vivcharyk's blogs
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Ordered Retries in Kafka: Why You Probably Shouldn't Build This
Mar 24 · 8 min read · I once spent three weeks in architectural meetings arguing that we should insert SQS between two Kafka topics. I wasn't doing it because I liked SQS. I was doing it because the "clean" Kafka-native retry logic felt like a complexity bomb our team was...
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Ordered Retries in Kafka: The Bugs You'll Find in Production
Mar 17 · 12 min read · In Part 1, we introduced a "middle ground" for Kafka retries: when a message fails, lock its key, send the message to a retry topic, and let the main partition continue processing other keys. If you need a recap, the Confluent blog covers the pattern...
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Ordered Retries in Kafka: Why The Retry Topic Is Breaking Downstream
Mar 10 · 8 min read · I was on-call when the P1 hit. Slack lighting up, a downstream team's database rejecting writes. Constraint violations everywhere. I pulled up the logs. The events looked fine. The schema was correct.
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The Ghost in the Database: Why Is This Empty Table Taking 20 Seconds to Query?
Feb 3 · 7 min read · SELECT * FROM my_table; Query execution time: ~5 seconds Table rows: 0 This made absolutely no sense. A few years ago, I found myself staring at a performance metric that defied logic. We had a table that was, for all intents and purposes, empty. Yet...
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