https://precomputing.com/tags/policy-language/ Recent content in Policy Language on Precomputing.com Hugo en-us Fri, 25 Sep 2026 00:00:00 +0000 https://precomputing.com/the-policy-language/ Fri, 25 Sep 2026 00:00:00 +0000 https://precomputing.com/the-policy-language/ <p><strong>A policy is a short text file. It names the streams of events you have and the answers to keep ready, and says how long each level of detail survives.</strong></p> <p>The compiler turns it into plain SQLite, and the Engine runs it as it is. This post walks through a policy line by line, and shows what each line becomes in the file.</p> <p><img src="https://precomputing.com/images/policy-anatomy.png" alt="A policy&rsquo;s lines and the tables they become. raw keep 5m becomes latency_raw, whole events. Each rollup becomes rows of latency_win, one summary per window and key, and quantiles ms adds the sketch buckets in latency_ms_sk. samples becomes latency_sample, anomalies becomes latency_anomaly and latency_base, and each precompute becomes a view with its own name."></p>