We Replaced REST with Kafka and Cut API Failures by 90% — A Production Cutover (.NET 9)
6d ago · 4 min read · TL;DR — We swapped Mattrx's inter-service REST calls for Kafka topics (multi-tenant marketing analytics SaaS, .NET 9 / ASP.NET Core, Azure SQL, ~3,200 req/sec peak). Over 8 weeks: end-to-end ingestion
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