perf(aviation): halve seed cadence to 30min + extend Redis TTLs

[koala73]

Summary

• Bump seed-aviation Redis TTLs to 2100s (35 min) so keys span the new 30-min cron interval with buffer
• Update architecture doc to reflect the new 30-min cadence
• Paired with a Railway dashboard cron change on service a8e49386-64c1-4e1e-9f82-4eb69a55fce3 (15min → 30min), done out of band
• Motivation: AviationStack upstream call volume has been climbing over the past few days; this cuts the seeder's contribution from ~576/day to ~288/day

Test plan

• npm run typecheck + npm run typecheck:api
• npm run lint + npm run lint:md
• node --test tests/edge-functions.test.mjs
• After Railway cron is switched, confirm seed-meta:aviation:ops-news updates every 30 min and aviation:ops-summary:v1:... key never TTL-expires between runs

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Project	Deployment	Actions	Updated (UTC)
worldmonitor	Ready	Preview, Comment	Apr 13, 2026 6:13pm

[greptile-apps]

Greptile Summary

This PR halves the seed-aviation cron cadence from 15 min to 30 min and raises both Redis TTLs to 2100 s (35 min) so keys survive the longer interval with a 5-minute buffer. The documentation table in architecture.mdx is updated to match.

Confidence Score: 5/5

Safe to merge — changes are confined to TTL constants and a one-line doc update with no logic risk.

Both findings are P2 (style/hardening suggestions). The TTL math is correct (2100 s > 1800 s interval), the documentation is consistent, and the motivation is clearly stated. No correctness or data-integrity issues present.

No files require special attention.

Important Files Changed

Filename	Overview
scripts/seed-aviation.mjs	OPS_TTL bumped 300 → 2100 s, NEWS_TTL bumped 900 → 2100 s; both now exceed the new 30-min (1800 s) cron interval by a 5-minute buffer, preventing key expiry between runs.
docs/architecture.mdx	One-line doc update: seed-aviation cadence column changed from "15 min" to "30 min" — accurate and consistent with the code change.

Sequence Diagram

sequenceDiagram
    participant Railway as Railway Cron
    participant Seed as seed-aviation.mjs
    participant AviStack as AviationStack API
    participant RSS as RSS Feeds (×9)
    participant Redis as Upstash Redis

    Note over Railway,Redis: Every 30 min (1800 s)
    Railway->>Seed: trigger
    par Airport ops (serial)
        loop 6 airports
            Seed->>AviStack: GET /flights?dep_iata=XXX
            AviStack-->>Seed: flight data
            Seed->>Seed: sleep 300ms
        end
    and Aviation news (parallel)
        Seed->>RSS: fetch all feeds
        RSS-->>Seed: XML
    end
    Seed->>Redis: SET aviation:ops-summary:v1:... TTL=2100s
    Seed->>Redis: SET aviation:news::24:v1 TTL=2100s
    Note over Redis: Keys live 35 min (5-min buffer over 30-min interval)

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_{Reviews (1): Last reviewed commit: "perf(aviation): halve seed cadence to 30..." | Re-trigger Greptile}

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Project	Status	Preview	Updated (UTC)
WorldMonitor	🔴 Failed	–	Apr 13, 2026, 6:22 PM

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