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fix(infra): address ISP-060/061/062/063 — infrastructure stability - #843

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Mikey-222 merged 2 commits into
Hel-Phone:mainfrom
Akanimoh12:fix/isp-060-063-infra
Oct 19, 2026
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fix(infra): address ISP-060/061/062/063 — infrastructure stability#843
Mikey-222 merged 2 commits into
Hel-Phone:mainfrom
Akanimoh12:fix/isp-060-063-infra

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@Akanimoh12

@Akanimoh12 Akanimoh12 commented Oct 19, 2026

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Summary

Comprehensive infrastructure reliability fixes addressing four critical issues affecting emergency dispatch stability, CRDT convergence under partition, and privacy compliance.

ISP-063: Binary Asset Sync vs Workbox Quota

  • Problem: Large binary assets (hero video, WASM, map tiles) exhaust Workbox quota, blocking critical requests
  • Solution: Three-tier asset manager with intelligent eviction (critical/frequent/ephemeral)
  • Impact: Prevents blob-worker failures and dispatch starvation under asset load

ISP-061: Multi-Leader CRDT Split-Brain Recovery

  • Problem: Three disaster zones partition 72h+ with conflicting dispatch histories; rejoin loses aid records
  • Solution: Deterministic conflict resolution via status/priority lattices + reconciliation checkpoints
  • Impact: Idempotent merges ensure zero-data-loss convergence across all zones

ISP-062: Dispatch Priority Inversion Prevention

  • Problem: Wall-clock status updates starve urgent requests behind 5s-old stale updates
  • Solution: Weighted dispatch queue (critical:100, high:10, normal:5, low:1) + stale-update skipping
  • Impact: Critical dispatches never buried; avgWaitTime < 30s under sustained load

ISP-060: Telemetry Privacy & WASM Bypass Prevention

  • Problem: Ring buffer leaks raw GPS; WASM redactor bypassed by JS fast path
  • Solution: Geohashing + noise injection + ring buffer + SHA256 checksum verification
  • Impact: Detects plaintext coordinate reintroduction; differential-privacy guarantees

Files Changed

  • src/lib/assetManager.ts — Intelligent asset caching with quota-pressure detection
  • src/lib/crdtAdvanced.ts — Deterministic CRDT reconciliation for split-brain recovery
  • src/lib/dispatchQueue.ts — Priority queue preventing request starvation
  • src/lib/telemetryRedactor.ts — Geohashing + noise + checksum verification
  • server/middleware/dispatchPriority.ts — Server-side priority detection middleware
  • test/isp-fixes.test.js — Comprehensive test coverage for all four fixes
  • docs/isp-060-063-fixes.md — Detailed documentation and deployment guide

Test Plan

  • Unit tests for all four modules
  • Integration tests for split-brain scenario (3-zone partition + rejoin)
  • Priority queue starvation prevention validation
  • Checksum verification against plaintext leak attempts
  • Ring buffer overflow protection

Run: npm test test/isp-fixes.test.js

Closes #733
Closes #731
Closes #732
Closes #730

@Akanimoh12
fix(infra): address ISP-060/061/062/063 — asset quotas, split-brain r…
12e660f 
…ecovery, dispatch priority inversion, telemetry privacy

Implement comprehensive infrastructure stability improvements addressing four critical issues:

**ISP-063**: Binary asset sync vs Workbox quota exhaustion
- Add AssetManager with three-tier caching (critical/frequent/ephemeral)
- Automatic LRU eviction when quota pressure detected
- Prevents blob-worker failures and dispatch starvation under asset load

**ISP-061**: Multi-leader CRDT split-brain disaster recovery
- Implement deterministic conflict resolution via status/priority lattices
- Add reconciliation checkpoints for 72h+ partition rejoin scenarios
- Idempotent merges ensure all zones converge without data loss
- Causal edge tracking for happens-before consistency

**ISP-062**: Vector-clock causal fence vs wall-clock dispatch priority inversion
- Add DispatchQueue with weighted round-robin (critical:100, high:10, normal:5, low:1)
- Implement stale-update detection: skip updates older than 5s if critical requests queued
- Prevent urgent dispatches from starvation under status-update load
- Integrate server-side priority detection via X-Priority header

**ISP-060**: Differential-privacy telemetry + WASM redactor bypass prevention
- Implement TelemetryRedactor with geohashing + Gaussian noise injection
- Ring buffer (max 100 events) prevents raw GPS leakage
- SHA256 checksum verification detects if plaintext coordinates reintroduced by JS
- Automatic garbage collection and drain() for aggregation pipeline

All four fixes include comprehensive test coverage, integration examples, and deployment guidance.

Fixes Hel-Phone#733, Hel-Phone#731, Hel-Phone#732, Hel-Phone#730
@drips-wave

drips-wave Bot commented Oct 19, 2026

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@Akanimoh12 Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

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@Mikey-222
Mikey-222 merged commit 782964f into Hel-Phone:main Oct 19, 2026
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