Answer
Avoid blocking operations, reduce GC pauses, use streams, optimize DB queries, enable keep-alive, and minimize middleware overhead.
Quick Answer
Low latency tuning: use keep-alive connections (avoid TCP reconnects), disable Nagle's algorithm (socket.setNoDelay), use fast JSON parsers (fast-json-stringify, oj), avoid synchronous I/O, keep event loop free of heavy work (worker threads for CPU tasks), pre-warm the JIT (run warmup requests on startup), and profile with clinic.js flamegraphs.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ