Centrifugo has several client SDKs to establish a real-time connection with a server. Centrifugo SDKs use WebSocket as the main data transport and send/receive messages encoded according to our bidirectional protocol. That protocol is built on top of the Protobuf schema (both JSON and binary Protobuf formats are supported). It provides asynchronous communication, sending RPC, multiplexing subscriptions to channels, etc. Client SDK wraps the protocol and exposes a set of APIs to developers.| centrifugal.dev
Deploying DB schema changes in heavily loaded systems is challenging. In this article, we explore one of the challenges - how to avoid situations when DDLs get blocked, wait to acquire a lock, and during that, start blocking other sessions.| PostgresAI
