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Integration tests are the most valuable tests for catching real defects, and the most commonly sacrificed for pipeline speed. The right answer is neither running them on every commit nor deleting them — it's placing them correctly in the pipeline architecture.
Read moreOptional is a return type that signals absence explicitly. It's not a null replacement, not a container to store in fields, and not a way to avoid NullPointerException everywhere. Used correctly, it improves API clarity. Used incorrectly, it adds allocation and verbosity without benefit.
Read moreA service without meaningful monitoring is a service you're flying blind on. You don't know if it's working, degrading, or failing — until a user tells you. That is not an acceptable operational posture.
Read moreNULL represents the absence of a value, not zero, not an empty string, and not false — its three-valued logic and propagation rules produce query results that are consistently surprising to developers who treat it as a regular value.
Read moreCzech engineering talent is genuinely strong. The enterprise companies that figured this out a decade ago have had first pick ever since.
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