---
quick_id: 260618-smr
slug: remove-unused-redis-service-and-referenc
description: Remove unused Redis service and references
status: complete
completed: 2026-06-18
duration: ~10m
tasks_completed: 2
tasks_total: 2
files_modified:
  - docker-compose.yml
  - docker-compose.dev.yml
  - CLAUDE.md
  - README.md
  - docs/ARCHITECTURE.md
  - docs/CONFIGURATION.md
  - docs/deployment.md
  - docs/DEVELOPMENT.md
  - docs/GETTING-STARTED.md
  - docs/TESTING.md
  - apps/pwa/e2e/README.md
  - apps/pwa/playwright.config.ts
decisions:
  - Redis dropped entirely from compose and all docs; in-memory EventEmitter is the live-sync mechanism (D-12/D-18 rationale comments in source preserved)
---

# Quick Task 260618-smr: Remove unused Redis service and references — Summary

## One-liner

Dropped the unused `redis:7-alpine` compose service and scrubbed every documentation/config reference implying Redis is part of the stack, while preserving the D-12/D-18 in-memory-vs-Redis design-rationale comments in source.

## Tasks Completed

| Task | Description                          | Commit  | Files                                                      |
| ---- | ------------------------------------ | ------- | ---------------------------------------------------------- |
| 1    | Remove redis service from compose    | 269e474 | docker-compose.yml, docker-compose.dev.yml                 |
| 2    | Clean documentation references       | 8255be6 | CLAUDE.md, README.md, docs/*, apps/pwa/e2e/README.md, apps/pwa/playwright.config.ts |

## Verification Results

- `grep -ri redis docker-compose.yml docker-compose.dev.yml` → no output (clean)
- `docker compose -f docker-compose.yml -f docker-compose.dev.yml config` → PARSE OK
- `grep -rniE redis CLAUDE.md README.md docs apps/pwa/e2e apps/pwa/playwright.config.ts` → no output (clean)
- `pnpm format:check` → all matched files use Prettier code style
- Protected source files (listEmitter.ts, reminderScheduler.ts, linkNonceStore.ts, localAuth.ts) → untouched (git diff confirms no changes)

## Docker Compose Config

`docker compose -f docker-compose.yml -f docker-compose.dev.yml config` parsed successfully with no Redis service — confirmed available on this host.

## Deviations from Plan

None — plan executed exactly as written.

## Known Stubs

None.

## Self-Check: PASSED

- Commits 269e474 and 8255be6 exist in git log
- All 12 modified files confirmed updated
- Grep verifies zero Redis references in target files
- Protected source files confirmed untouched