Tag
Performance
2 diagram-led guides on Performance by Abhishek Goyal.
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GuideNew
Why Strings Are Immutable in Java
Inside java.lang.String: the final byte[], compact strings and the cached hash — and the five reasons immutability was chosen: the string pool, hash-based collections, security, thread safety and class loading.
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Guide
Backend Under Load: Eight Failure Modes
A system design interview field guide to how backends actually degrade — connection pool saturation, cache stampedes, lock contention, hot partitions, slow queries, network bottlenecks, and GC pauses — plus how they cascade into each other in a real incident.