fix(platform): 渠道并发 - 支持后台热配置并等待空闲槽位 (#34)

Co-authored-by: ddCat <ddcat666@88.com>

docker-compose.server.yml

@@ -42,6 +42,8 @@ services:
       CANVAS_DATABASE_DRIVER: ${CANVAS_DATABASE_DRIVER:-postgres}
       DATABASE_URL: ${DATABASE_URL:-}
       REDIS_URL: ${REDIS_URL:-redis://redis:6379/0}
+      CANVAS_WORKER_CONCURRENCY: ${CANVAS_WORKER_CONCURRENCY:-3}
+      CANVAS_CHANNEL_CONCURRENCY: ${CANVAS_CHANNEL_CONCURRENCY:-3}
       CANVAS_REGISTRATION_ENABLED: ${CANVAS_REGISTRATION_ENABLED:-false}
       CANVAS_ALLOW_PRIVATE_UPSTREAMS: ${CANVAS_ALLOW_PRIVATE_UPSTREAMS:-false}
       CANVAS_ALLOWED_PRIVATE_UPSTREAM_HOSTS: ${CANVAS_ALLOWED_PRIVATE_UPSTREAM_HOSTS:-}