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Java's sort is fast. The comparators passed to it often aren't. Here is how natural ordering, Comparator composition, and the contracts comparators must satisfy interact — and where subtle bugs hide.
Read moreSpring Boot Actuator ships with powerful defaults for health checks, metrics, and operational visibility. The defaults are not production-ready as-is. Here is how to configure what to expose, how to secure it, and how to extend it for your application's specific needs.
Read moreMicronaut's compile-time DI and sub-second startup make a compelling case on paper, but the real question is whether the ecosystem maturity gap and steeper learning curve are worth it for your actual deployment context.
Read moreGetting Spring Cloud Vault working in development is straightforward. Running it reliably in production requires understanding lease renewal behavior, startup failure modes, high availability configuration, and the categories of secrets that Vault handles well versus those where it adds complexity without benefit.
Read moreAudit fields — who created this record and when, who last modified it — are required in most production applications. Spring Data JPA provides this automatically with minimal configuration, but the integration with bulk operations, tests, and security context has specific traps worth knowing.
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