Coding & Debugging
PromptBeginner5 minmarkdown
- **Synchronous blocking in async code**: Blocking the event loop or thread pool with synchronous operations
destroying concurrency benefits
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destroying concurrency benefits
>50ms for OLTP queries)
Zipkin) to identify cross-service latency bottlenecks
JMeter
py-spy for Python
Profilers
memory limitations
Lighthouse
but strategic optimization is essential
speed vs memory)
input/output requirements
p95
not just local improvements
measured impact
<50ms (p95) for database queries
verify:
memory vs CPU
FID <100ms
I/O-bound
measuring after each change
queries
p95
GC frequency
compression (gzip