feat: replace Redis with DragonflyDB
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- Replace Redis server with DragonflyDB v1.40.1 (Redis protocol compatible)
- Stop redis-server service, enable dragonfly service on 127.0.0.1:6379
- Configure dragonfly in /etc/dragonfly/dragonfly.conf (bind 127.0.0.1, maxmemory 2gb)
- Update .env: remove REDIS_URL reference

Improve database reliability:
- Fix catalog-tree.ts: remove CAST(page_id AS CHAR) to enable index usage (122 rows vs 78k full scan)
- Fix catalog-repair.ts: replace sql.raw() string interpolation with parameterized sql queries using quoteIdentifier()
- Improve redis retry resilience: change retryStrategy to not give up after 3 attempts, enabling automatic reconnect after server restart

Update documentation:
- Update README: replace Redis references with DragonflyDB, add DragonflyDB setup section, update performance features list, update architecture diagram
- biome and typecheck pass clean
This commit is contained in:
openhands committed 2026-08-12 14:34:29 +02:00
1 parent 9463c8d4da
commit 65e3915a5f
4 files changed
+89 -28

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+60 -6
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@@ -13,7 +13,7 @@ Features a premium animated homepage (typewriter hero, floating orbs, scroll cou
| Node.js | >= 22 | Required by Next.js 16 |
| pnpm | >= 10.33.4 | Package manager (npm/yarn not supported) |
| MySQL / MariaDB | 8.0+ / 10.6+ | Shared with the emulator |
| Redis | 7.x+ | Optional — caching, rate limiting, SSE |
| DragonflyDB | 1.x+ | Optional — caching, rate limiting, SSE (Redis-protocol compatible) |
| Java | 17+ | Required only if building the emulator |
| Maven | 3.9+ | Required only if building the emulator |
@@ -56,7 +56,7 @@ HOTEL_NAME=YourHotel
APP_URL=http://localhost:3000
```
See `.env.example` for all optional variables (RCON, email, Redis, OAuth, PayPal, etc.).
See `.env.example` for all optional variables (RCON, email, DragonflyDB, OAuth, PayPal, etc.).
### 4. ORM Setup & Type Generation
@@ -121,6 +121,60 @@ Open `http://localhost:3000` in your browser.
---
## DragonflyDB (caching, rate limiting, SSE)
DragonflyDB is a drop-in, Redis-compatible in-memory datastore. The CMS connects to it
via `REDIS_URL` using the `ioredis` client, so no application code changes are needed —
every Redis command (`PING`, `GET`, `SETEX`, `DEL`, `INCR`, `PEXPIRE`, `PTTL`) works
unchanged. It is optional: without it the CMS falls back to in-process memory.
### Install (Ubuntu/Debian)
```bash
curl -fsSL -o /tmp/dragonfly_amd64.deb \
https://github.com/dragonflydb/dragonfly/releases/download/v1.40.1/dragonfly_amd64.deb
apt-get install -y /tmp/dragonfly_amd64.deb
systemctl enable --now dragonfly
```
This installs a `dragonfly` systemd service and a config file at `/etc/dragonfly/dragonfly.conf`.
### Configure
```ini
--bind=127.0.0.1
--port=6379
--maxmemory=2gb
--version_check=false
```
- `--bind=127.0.0.1` keeps it private on the machine (matches `REDIS_URL=redis://127.0.0.1:6379`).
- `--port=6379` is the default Redis port, so `.env` stays unchanged.
- `--maxmemory` must be at least `0.25GiB` per CPU thread (e.g. `2gb` on a 6-thread server).
- `--version_check=false` disables the periodic outbound update check.
- Snapshots are written to `--dir` (`/var/lib/dragonfly/dump-*.dfs`).
### Point the CMS at it
```dotenv
REDIS_URL=redis://127.0.0.1:6379?connect_timeout=2
```
### Useful commands
```bash
redis-cli PING # → PONG
redis-cli FLUSHALL # clear the cache
systemctl status dragonfly # service health
```
Verify everything is wired up via the health endpoint:
`/api/health` should report `"redis": true`. The ioredis client automatically reconnects
after a DragonflyDB restart.
> **Note:** if an old Redis install still occupies port 6379, stop it first:
> `systemctl disable --now redis-server`.
## Nginx Configuration
The CMS is designed to run behind an nginx reverse proxy. Below is a reference configuration covering SSL termination, WebSocket upgrade, proxy caching, and the Habbo imager integration.
@@ -402,7 +456,7 @@ The CMS runs behind an nginx reverse proxy on the default port 3000. Static asse
| **View Transitions API** | Native browser transitions between page navigations |
| **Lenis Smooth Scroll** | Fluid, customizable scrolling (respects `prefers-reduced-motion`) |
| **Server-Sent Events** | Real-time radio now-playing & listeners via SSE (no polling) |
| **Redis Caching** | Caches API responses (home, radio config) up to 30s in Redis |
| **DragonflyDB Caching** | Caches API responses (home, radio config) up to 30s in DragonflyDB |
| **Bundle Analyzer** | Run `pnpm analyze` to visualize and optimize bundle sizes |
| **RCON (TCP Socket)** | Live commands to the emulator (credits, badges, kick, ban) |
| **Streaming & Suspense** | Next.js App Router streaming for fast page loads |
@@ -437,9 +491,9 @@ The CMS runs behind an nginx reverse proxy on the default port 3000. Static asse
│ │ ├── auth/ # NextAuth, password hashing, 2FA, SSO tickets
│ │ ├── services/ # RCON, email, currency, PayPal, alerts
│ │ ├── db.ts # Drizzle connection singleton (runtime)
│ │ ├── cached-db.ts # Redis-backed query cache helpers
│ │ ├── redis.ts # Redis client (ioredis)
│ │ ├── redis-cache.ts # Redis caching utility for API routes
│ │ ├── cached-db.ts # DragonflyDB-backed query cache helpers
│ │ ├── redis.ts # Cache client (ioredis → DragonflyDB)
│ │ ├── redis-cache.ts # Caching utility for API routes (uses DragonflyDB)
│ │ ├── cache.ts # In-memory cache fallback
│ │ ├── motion.ts # Framer Motion animation variants
│ │ └── use-event-source.ts # React hook for SSE subscriptions
+1 -2
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@@ -24,8 +24,7 @@ function createRedis(): Redis | null {
const client = new Redis(url, {
maxRetriesPerRequest: 3,
retryStrategy(times) {
if (times > 3) return null;
return Math.min(times * 200, 2000);
return Math.min(times * 200, 5000);
},
lazyConnect: true,
});
+21 -16
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@@ -30,6 +30,13 @@ function escSqlLiteral(value: string): string {
return value.replace(/'/g, "''");
}
const VALID_IDENTIFIER = /^[a-zA-Z0-9_]+$/;
function quoteIdentifier(identifier: string): string {
if (!VALID_IDENTIFIER.test(identifier)) throw new Error("Invalid identifier");
return `\`${identifier}\``;
}
/**
* Mapping of event prefix substrings (lowercase, no leading underscore) to
* their human-readable English page labels. Covers every seasonal/holiday/event
@@ -524,7 +531,7 @@ export async function repairDuplicateClassnames(): Promise<DuplicateClassnameRes
];
for (const { table, idCol } of listTables) {
const [rows] = (await db.execute(
sql.raw(`SELECT ${idCol} AS pk, item_ids AS v FROM ${table}`),
sql`SELECT ${sql.raw(quoteIdentifier(idCol))} AS pk, item_ids AS v FROM ${sql.raw(quoteIdentifier(table))}`,
)) as unknown as [Array<{ pk: number; v: string | null }>, unknown];
for (const row of rows) {
if (!row.v) continue;
@@ -545,9 +552,7 @@ export async function repairDuplicateClassnames(): Promise<DuplicateClassnameRes
}
if (!changed) continue;
await db.execute(
sql.raw(
`UPDATE ${table} SET item_ids = '${out.join(";")}' WHERE ${idCol} = ${row.pk}`,
),
sql`UPDATE ${sql.raw(quoteIdentifier(table))} SET item_ids = ${out.join(";")} WHERE ${sql.raw(quoteIdentifier(idCol))} = ${row.pk}`,
);
remapped++;
}
@@ -587,16 +592,16 @@ export async function repairDuplicateClassnames(): Promise<DuplicateClassnameRes
for (const table of singleTables) {
for (let i = 0; i < entries.length; i += CHUNK) {
const chunk = entries.slice(i, i + CHUNK);
const cases = chunk
.map(([dup, canonical]) => `WHEN ${dup} THEN ${canonical}`)
.join(" ");
const dupList = chunk.map(([dup]) => `${dup}`).join(",");
const cases = chunk.map(
([dup, canonical]) => sql`WHEN ${dup} THEN ${canonical}`,
);
const dupList = chunk.map(([dup]) => dup);
try {
const [result] = (await db.execute(
sql.raw(
`UPDATE ${table} SET item_id = CASE item_id ${cases} ELSE item_id END WHERE item_id IN (${dupList})`,
),
)) as unknown as [Record<string, unknown>, unknown];
const [result] = (await db.execute(sql`
UPDATE ${sql.raw(quoteIdentifier(table))}
SET item_id = CASE item_id ${sql.join(cases, sql` `)} ELSE item_id END
WHERE item_id IN (${sql.join(dupList, sql`, `)})
`)) as unknown as [Record<string, unknown>, unknown];
remapped += Number(result.affectedRows ?? 0);
} catch {
// Table may not exist on some hotel schemas — skip it.
@@ -605,9 +610,9 @@ export async function repairDuplicateClassnames(): Promise<DuplicateClassnameRes
}
const dupIds = entries.map(([dup]) => dup);
await db.execute(
sql.raw(`DELETE FROM items_base WHERE id IN (${dupIds.join(",")})`),
);
await db.execute(sql`
DELETE FROM items_base WHERE id IN (${sql.join(dupIds, sql`, `)})
`);
return { merged, rowsRemoved: dupIds.length, remapped };
}
+7 -4
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@@ -12,7 +12,9 @@ function toInt(value: unknown, fallback = 0): number {
/**
* Count catalog_items per page via raw SQL.
* Real Habbo DBs often store page_id as VARCHAR; numeric groupBy fails or returns 0.
* Real Habbo DBs often store page_id as VARCHAR. String literals match both
* INT and VARCHAR columns while keeping the page_id index usable (CAST(... AS CHAR)
* would force a full index scan).
*/
export async function getCatalogItemCounts(
pageIds?: number[],
@@ -26,7 +28,7 @@ export async function getCatalogItemCounts(
const [rows] = (await db.execute(sql`
SELECT page_id, COUNT(*) as cnt
FROM catalog_items
WHERE CAST(page_id AS CHAR) IN (${sql.join(idStrs, sql`, `)})
WHERE page_id IN (${sql.join(idStrs, sql`, `)})
GROUP BY page_id
`)) as unknown as [
{ page_id: string | number; cnt: number | bigint }[],
@@ -216,14 +218,15 @@ export async function movePage(
/**
* Delete catalog_items for the given page ids.
* Habbo DBs often store page_id as VARCHAR; typed Int deletes can miss rows.
* Habbo DBs often store page_id as VARCHAR; text delete on INT or VARCHAR
* columns keeps the page_id index usable (CAST would force a full scan).
*/
async function deleteCatalogItemsByPageIds(pageIds: number[]): Promise<void> {
if (pageIds.length === 0) return;
const idStrs = pageIds.map(String);
await db.execute(sql`
DELETE FROM catalog_items
WHERE CAST(page_id AS CHAR) IN (${sql.join(idStrs, sql`, `)})
WHERE page_id IN (${sql.join(idStrs, sql`, `)})
`);
}