Deterministically route each project's database events to a specific worker using crc32(projectId) % numWorkers, preventing all projects from funneling into a single queue. Scale to 4 workers in dev, default to 1 for self-hosted.

Event routing (src/Appwrite/Event/Database.php)

• Queue name now includes worker index suffix: {dbHost}-{workerIndex}
• Worker count controlled by _APP_DATABASE_WORKERS (default: 1 for self-hosted safety)

$numWorkers = (int) System::getEnv('_APP_DATABASE_WORKERS', 1);
$workerIndex = \abs(\crc32($project->getId())) % $numWorkers;
$this->queue = $dsn->getHost() . '-' . $workerIndex;

Infrastructure

• docker-compose.yml: 4 worker services (appwrite-worker-databases-{0..3}), each with _APP_QUEUE_NAME=database_db_main-{i}. Dev .env sets _APP_DATABASE_WORKERS=4.
• compose.phtml (self-hosted install): 1 worker by default — self-hosted users can scale by setting _APP_DATABASE_WORKERS and adding worker containers.
• app/worker.php: Default queue name updated to database_db_main-0.

Health check

• Default queue param in /health/queue/databases updated to database_db_main-0.
• DatabasesQueueTest updated accordingly.

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.