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Most Rails migration patterns that work fine in development will lock tables in production. Here is the mental model and specific techniques for schema changes that deploy safely on live databases.
Read moreApplication-layer caching with @Cacheable keeps data out of the database. HTTP caching with Cache-Control and ETags keeps responses out of the application entirely. The two layers serve different purposes and work best together.
Read moreMost Java code quality guidance is either too abstract to apply or applied too rigidly to improve real codebases. Here is a honest assessment of the rules that consistently improve maintainability and the ones that create friction without payoff.
Read moreMost Java developers use generics as glorified type-safe containers and stop there. Wildcards and bounds solve real API design problems — here is what they are, when they help, and when they make things worse.
Read moreJava memory leaks are not about forgetting to free memory — the GC handles that. They are about holding references longer than necessary. Here are the specific patterns that cause them and the tooling that finds them.
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