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Serve the /api/v1/stats prefix distribution from memory (closes #30 )

The prefix distribution was the last query on the stats path. It read one
index entry per live route on every request, so on a large database it took
the whole 4-second deadline and /api/v1/stats answered 500.

The distribution now lives next to the in-memory counts: seeded once at
startup from the same query, then kept exact by the live-route writes. A new
route whose prefix had no live route adds one at its mask length; a delete
that leaves a prefix with no live route takes one away. Each check is one
lookup on the prefix index, made only for new and removed routes, inside the
write.

Model: opus-5-5

2026-09-29 11:05:28 +00:00

5.4 KiB

Raw Blame History

Workflow

branch (from main)
do the work in Next Step
move Next Step to the top of Completed Steps
move the top item of Future Steps into Next Step
commit (TODO.md changes in the same commit as the work)
merge to main if the branch is not protected, otherwise open a PR
push

Status

pre-1.0. No git tags. The Docker build runs the format check, the linter and the tests, and the Gitea workflow runs that build on every push. The image sets memory ceilings for a 5 GiB container (README "Memory") and the README says how to run it under upaas (README "Running under upaas"). A 35-hour run of 3898daa on the live feed peaked at about 1 GiB, without a container memory limit.

Next Step

next waits for sneak to merge it to main through #6. After that, setting routewatch up under upaas on fsn1app1 and deploying it are his (#31), and so is the run under a real 5 GiB limit (#3).

Completed Steps

2026-09-29: /api/v1/stats serves the prefix distribution from memory, seeded at startup and adjusted on every live-route write, so a request no longer reads every live route (closes #30)
2026-09-29: the entrypoint creates the data directory if it is missing and stops the start if a step fails; README "Running under upaas" no longer asks for the host directory to be created first (closes #42)
2026-09-29: .dockerignore keeps .git, local build output, local databases and .env out of the Docker build context, and so out of the source archive in the image (closes #39)
2026-09-29: README first line names the MIT license and the author; the License section now says MIT and links LICENSE, and an Author section was added; this file brought up to date (closes #38)
2026-09-29: MIT LICENSE (closes #1)
2026-09-28: stopping the daemon while the feed is flowing no longer panics with "send on closed channel": the read loop checks for a stop just before handing a message to the handler queues, and a second Stop no longer closes the queues again (closes #34)
2026-09-28: docker stop no longer kills the daemon 2 seconds after the stop signal: the entrypoint switches to the routewatch user with setpriv instead of runuser, so the daemon receives the signal itself and gets the whole wait docker stop allows, up to its own 60-second limit (closes #33)
2026-09-28: ready to run under upaas: a set but invalid PORT, XDG_DATA_HOME or MALLOC_ARENA_MAX stops the start, the health check follows PORT, README "Running under upaas" section (closes #31)
2026-09-22: realtime in-memory database statistics: counts seeded at startup and adjusted on every write, oldest/newest route timestamps via index-end lookups; /api/v1/stats no longer scans the tables (closes #27)
2026-09-21: batch writes take the write lock when their transaction begins (_txlock=immediate), so they wait out a WAL checkpoint instead of failing with "database is locked" (closes #25)
2026-09-21: MALLOC_ARENA_MAX=2 in the image caps glibc malloc arenas, so memory outside the Go runtime no longer grows with the core count (closes #23)
2026-09-21: GOMEMLIMIT=1536MiB in the image; README Memory section with the memory budget and the 5 GiB container limit (closes #13)
2026-09-21: the four handler queues hold at most 20,000 messages each, down from 100,000 (closes #11)
2026-09-21: two goroutine leaks fixed: the stats handlers after a timeout and the streamer's tickers on every reconnect (closes #12)
2026-09-21: parsed RIS messages no longer keep the unused Community and Raw fields (closes #9)
2026-09-21: .editorconfig, and a Gitea workflow that runs script/cibuild on every push (closes #14)
2026-09-21: the peering handler's AS-path map holds at most 500,000 paths and is swapped for an empty one every 30 seconds instead of copied (closes #10)
2026-09-21: SQLite memory bounded across the whole connection pool: a 64 MiB page cache on each connection, 1 GiB soft and 1.5 GiB hard heap limits (closes #8)
2026-09-21: the Docker build runs the format check, the linter and the tests, linting in a separate stage on a golangci-lint image pinned by digest (closes #5)
2026-09-21: make test skips the live-network feed test (-short), so make check no longer depends on the network (closes #2)
2026-07-07 Adopted scripts-to-rule-them-all: script/ entrypoints, Makefile shims, README Entrypoints section
2026-02-22: repo policy compliance: required policy files, .gitignore update, Makefile fmt-check/check/docker/hooks targets, gofmt pass (repo-policies-compliance, unmerged)
2026-01-01: WAL checkpointing: periodic (5s), on startup with logging, TRUNCATE mode; fixed slow queries
2025-12-31: status page: navbar, home page with search, oldest/newest route timestamps, NULL handling in WHOIS stats; container runs as routewatch user with proper state dir
2025-12-30: structured HTTP request logging, increased timeouts, CIDR prefix URL routing fixes, status page metrics and footer
2025-12-29: Dockerfile multi-stage build with source archive; SQLite incremental vacuum for non-blocking space reclamation
2025-07-27: initial RouteWatch BGP stream monitor

Future Steps

Production memory under 5 GiB: whether to test under a real 5 GiB container limit on fsn1app1 is open for sneak (#3)