grpc: listen: "tcp://:9001" proto: "service.proto" tls: key: "server.key" cert: "server.crt" workers: command: "php worker.php" pool: numWorkers: 4 metrics: address: localhost:2112 limit: interval: 1 services: grpc: maxMemory: 100 TTL: 0 idleTTL: 0 execTTL: 60