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Graham McIntire bbf6481603
perf(nexrad): route fetch_decoded_frame through NexradCache 
Telemetry puts nexrad_decode_png at 1.76 s/call × 37,847 calls/h
— ~18.5 h of CPU across the cluster every real hour, the single
biggest CPU consumer in the system. The map-click path
(fetch_rain_cells) already cached decoded frames by 5-min
bucket, but the per-contact CommonVolumeRadarWorker path
(fetch_decoded_frame) went straight to network + decode on every
call. Backfill means many contacts share a 5-min window, so the
same 66 MB frame was being decoded dozens of times.

Wire fetch_decoded_frame through NexradCache keyed on the
rounded timestamp. Add a 20-entry size cap in NexradCache so
backfill processing contacts in random timestamp order can't
grow the ETS table to hundreds of GB. Each frame is ~66 MB, so
20 = ~1.3 GB worst case, well under typical pod memory.

Expected impact: cuts sustained decode load by an order of
magnitude depending on backfill temporal locality; map-click
path is unchanged.
2026-04-19 09:05:55 -05:00
.forgejo/workflows ci: install buildx and use docker buildx build --push 2026-04-18 15:21:30 -05:00
.github Add contact edit approval system with admin review queue 2026-04-11 16:15:49 -05:00
assets feat(map): shareable URL params for view/band/time 2026-04-19 08:53:07 -05:00
bin Fix livebook path resolution in bin/notebook 2026-04-07 11:15:49 -05:00
config feat(telemetry): PromEx Prometheus exporter at /metrics 2026-04-18 16:39:39 -05:00
docs docs: plan for GFS-driven extended-horizon forecasts (18 h → 240 h) 2026-04-18 12:35:08 -05:00
k8s chore: update prop image to git.mcintire.me/graham/prop:main-1776606930-bb6333b [skip ci] 2026-04-19 13:57:42 +00:00
lib perf(nexrad): route fetch_decoded_frame through NexradCache 2026-04-19 09:05:55 -05:00
lib_ml refactor: normalize pos1/pos2 JSONB key to 'lon' everywhere 2026-04-17 09:10:32 -05:00
notebooks refactor: normalize pos1/pos2 JSONB key to 'lon' everywhere 2026-04-17 09:10:32 -05:00
priv feat(contacts): private flag with scope-aware visibility 2026-04-18 17:49:01 -05:00
rel Add Erlang clustering via libcluster and expose LiveDashboard 2026-04-06 09:46:48 -05:00
scripts feat(propagation): per-band weight calibration from full-corpus correlation 2026-04-18 10:19:26 -05:00
test perf(nexrad): route fetch_decoded_frame through NexradCache 2026-04-19 09:05:55 -05:00
vendor Vendor oban_pro 1.6.13 2026-04-09 14:14:49 -05:00
.credo.exs credo 2026-04-12 10:26:53 -05:00
.dockerignore Optimize Dockerfile layer caching 2026-04-01 10:32:56 -05:00
.formatter.exs initial 2026-03-28 11:28:47 -05:00
.gitignore Dual-write propagation scores to binary files on /data 2026-04-14 14:36:55 -05:00
.tool-versions update deps 2026-04-11 12:03:43 -05:00
AGENTS.md initial 2026-03-28 11:28:47 -05:00
algo.md docs(algo): align algo.md with Richardson-gated scoring implementation 2026-04-18 12:42:20 -05:00
app.json Migrate healthchecks from CHECKS to app.json 2026-04-04 11:24:56 -05:00
CLAUDE.md fix(maps): same reconnect/visibility fix for rover and weather hooks 2026-04-18 13:25:38 -05:00
Dockerfile fix(docker): use BuildKit cache mounts for apt so .debs skip the layer 2026-04-18 11:07:45 -05:00
elevation.md add elevation findings 2026-03-29 16:23:03 -05:00
mix.exs feat(telemetry): PromEx Prometheus exporter at /metrics 2026-04-18 16:39:39 -05:00
mix.lock feat(telemetry): PromEx Prometheus exporter at /metrics 2026-04-18 16:39:39 -05:00
prediction.md HRRR forecast hours (f00-f18) with timeline map UI 2026-03-31 16:44:47 -05:00
README.md initial 2026-03-28 11:28:47 -05:00
tail_logs.sh Add type filter to backfill enqueue 2026-04-06 11:42:26 -05:00
updates.md Update seasonal scores from sounding data, document commercial link patterns 2026-04-07 11:45:44 -05:00

README.md

Microwaveprop

To start your Phoenix server:

  • Run mix setup to install and setup dependencies
  • Start Phoenix endpoint with mix phx.server or inside IEx with iex -S mix phx.server

Now you can visit localhost:4000 from your browser.

Ready to run in production? Please check our deployment guides.

Learn more