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latency-critical-systems

Optimize and verify latency-sensitive systems — realtime dashboards, market data feeds, streaming agents, execution gateways, queues, and caches — by tracking p50/p95/p99 latency, freshness age, and queue depth, mapping hot paths, and running live readbacks. Use when p95 latency, throughput, or data freshness matters.

skills/latency-critical-systems/SKILL.md

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# Latency Critical Systems

Use this skill when the user cares about realtime behavior, hot paths, streaming
freshness, or execution speed. This includes HFT-like infrastructure, but the
skill is engineering-focused. It does not authorize live trading or financial
advice.

## Split The Metrics

Do not collapse everything into "fast." Track:

- p50, p95, and p99 latency;
- throughput;
- freshness age;