perf: improve worker and storage throughput

docker/docker-compose.prod.yml

@@ -2,7 +2,7 @@ name: imageforge
 
 x-imageforge-environment: &imageforge-environment
   DATABASE_URL: postgres://imageforge:${POSTGRES_PASSWORD:?POSTGRES_PASSWORD is required}@postgres:5432/imageforge
-  DATABASE_MAX_CONNECTIONS: ${DATABASE_MAX_CONNECTIONS:-10}
+  DATABASE_MAX_CONNECTIONS: ${DATABASE_MAX_CONNECTIONS:-16}
   REDIS_URL: redis://redis:6379
   JWT_SECRET: ${JWT_SECRET:?JWT_SECRET is required}
   JWT_EXPIRY_HOURS: ${JWT_EXPIRY_HOURS:-168}
@@ -10,6 +10,7 @@ x-imageforge-environment: &imageforge-environment
   BILLING_PROVIDER: ${BILLING_PROVIDER:-stripe}
   STORAGE_PATH: /app/uploads
   PUBLIC_BASE_URL: ${PUBLIC_BASE_URL:-http://localhost:8080}
+  WORKER_TASK_CONCURRENCY: ${WORKER_TASK_CONCURRENCY:-4}
   WORKER_CONCURRENCY: ${WORKER_CONCURRENCY:-2}
   IMAGE_PROCESSING_CONCURRENCY: ${IMAGE_PROCESSING_CONCURRENCY:-2}
   ALLOW_ANONYMOUS_UPLOAD: ${ALLOW_ANONYMOUS_UPLOAD:-true}