LuTiao Programming
Apr 28, 2026 · Backend Development
How I Built a High‑Performance Java Price‑Comparison Engine from Scratch
Starting from a simple sequential Java price‑aggregator, the article walks through successive architectural upgrades—concurrent calls with CompletableFuture, timeout and fallback handling, Spring Boot service exposure, caching, bulkhead isolation, microservice split, and Kafka‑driven event processing—showing how latency drops from 1500 ms to under 20 ms.
JavaKafkaPrice Aggregation
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