General
PromptBeginner5 minmarkdown
Use checkboxes and stable IDs (e.g.
`PERF-PLAN-1.1`):
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Showing 24 of 82,429Categories: Data, Coding & Debugging, Education, Cursor-rules, General
General
PromptBeginner5 minmarkdown
- **Trade-offs**: Complexity
maintainability
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Coding & Debugging
PromptBeginner5 minmarkdown
Write all proposed optimizations and any code snippets to `TODO_perf-tuning.md` only. Do not create any other files. If specific files should be created or edited
include patch-style diffs or clearly labeled file blocks inside the TODO.
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General
PromptBeginner5 minmarkdown
In `TODO_perf-tuning.md`
include:
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General
PromptBeginner5 minmarkdown
- Baseline metrics: response time (p50
p95
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Data
PromptBeginner5 minmarkdown
- **Over-caching without invalidation**: Adding caches without invalidation strategies
serving stale data and creating consistency bugs
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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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Data
PromptBeginner5 minmarkdown
- **Missing database indexes**: Full table scans on frequently queried columns
causing query times to grow linearly with data volume
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General
PromptBeginner5 minmarkdown
- Monitor slow query logs and set appropriate thresholds (e.g.
>50ms for OLTP queries)
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Data
PromptBeginner5 minmarkdown
- **N+1 query patterns**: Fetching related data in loops instead of using joins or batch queries
multiplying database round-trips linearly
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General
PromptBeginner5 minmarkdown
- **Memory leaks under load**: Allocations growing without bound in long-running processes
leading to OOM crashes in production
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Education
PromptBeginner5 minmarkdown
- Use EXPLAIN ANALYZE to inspect query execution plans and identify sequential scans
hash joins
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Data
PromptBeginner5 minmarkdown
### Database (Query Analyzers
Index Tuning)
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General
PromptBeginner5 minmarkdown
- Implement distributed tracing (Jaeger
Zipkin) to identify cross-service latency bottlenecks
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Coding & Debugging
PromptBeginner5 minmarkdown
- Use language-specific CPU and memory profilers (pprof for Go
py-spy for Python
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General
PromptBeginner5 minmarkdown
- Run load tests with k6
JMeter
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Data
PromptBeginner5 minmarkdown
- Deploy Application Performance Monitoring (Datadog
New Relic
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General
PromptBeginner5 minmarkdown
### Frontend (Chrome DevTools
Lighthouse
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General
PromptBeginner5 minmarkdown
### Backend (APM
Profilers
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General
PromptBeginner5 minmarkdown
- Address scalability: proactively consider expected input size
memory limitations
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General
PromptBeginner5 minmarkdown
- Identify constraints
input/output requirements
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General
PromptBeginner5 minmarkdown
- Provide alternative solutions when trade-offs exist (in-place vs additional memory
speed vs memory)
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General
PromptBeginner5 minmarkdown
- Capture percentiles (p50
p95
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General
PromptBeginner5 minmarkdown
- Remember that premature optimization is counterproductive
but strategic optimization is essential
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