SYSTEM Cited by 3 sources
Datadog¶
Datadog is a SaaS observability platform covering infrastructure monitoring, APM, logs, synthetics, RUM (real user monitoring), and security. Datadog is itself a Tier-3 blog on this wiki (see companies/datadog); this page covers Datadog as a system adopted by other companies surfaced in ingested sources.
As a front-end / RUM observability substrate¶
- GitHub's Files-changed-tab rewrite (systems/github-pull-requests) surfaces Datadog as the dashboarding substrate for INP tracking: per-interaction INP measurements, PR diff-size segmentation (so p95+ PR regressions don't hide under median-healthy aggregates), and memory tagging. (Source: sources/2026-04-03-github-the-uphill-climb-of-making-diff-lines-performant)
- Figma's OpenSearch tuning (sources/2026-04-21-figma-the-search-for-speed-in-figma) surfaces Datadog as the metric source for the 8 ms avg / 1 s p99 mismatch — the dashboard surfaced per-shard latency as if it were end-to-end, hiding the 150 ms coordinator-view latency. Lesson: the observability substrate will happily show you the wrong number if you don't know what you're measuring.
As its own engineering org¶
Datadog publishes extensively on its own stack — see
systems/datadog-workload-protection (eBPF runtime security),
systems/datadog-mcp-server (LLM-agent observability surface),
systems/bits-ai-sre (hosted SRE agent), and
sources/2025-07-17-datadog-go-124-memory-regression (the Go 1.24
mallocgc bisect).
Stub¶
This page only catalogs Datadog's adopter-mentioned role in ingested sources. Datadog's internal architecture (event-store / timeseries backend / log pipeline / Husky / Duet) is covered by dedicated pages where ingested — e.g. systems/husky.
Seen in¶
- sources/2026-04-03-github-the-uphill-climb-of-making-diff-lines-performant — GitHub's INP dashboard with PR-size segmentation + memory tagging as the client-side observability substrate.
- sources/2026-04-21-figma-the-search-for-speed-in-figma — Figma's 8 ms-vs-1 s metric-granularity mismatch surfaced on a Datadog dashboard.
- sources/2025-07-17-datadog-go-124-memory-regression — Datadog's own Go 1.24 RSS regression investigation (workload running on Datadog's infra).
Related¶
- companies/datadog — company / engineering-blog entry.
- concepts/observability — the umbrella discipline.
- concepts/interaction-to-next-paint — key RUM metric Datadog surfaces.
- systems/datadog-workload-protection, systems/datadog-mcp-server, systems/bits-ai-sre, systems/husky — Datadog's own products / internals when covered by ingested sources.