https://socket.io/assets/js/82c30fbe.ea037f87.js

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1function u(e){let{components:t,...r}=e;return(0,n.kt)(d,(0,a.Z)({},c,r,{components:t,mdxType:"MDXLayout"}),(0,n.kt)("p",null,"We will list here the terms that are related to the Socket.IO ecosystem:"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"#adapter"},"Adapter")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"#engineio"},"Engine.IO")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"#namespace"},"Namespace")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"#room"},"Room")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"#transport"},"Transport"))),(0,n.kt)("h2",{id:"adapter"},"Adapter"),(0,n.kt)("p",null,"An Adapter is a server-side component which is responsible for:"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"storing the relationships between the Socket instances and the ",(0,n.kt)("a",{parentName:"li",href:"/docs/v4/rooms/"},"rooms")),(0,n.kt)("li",{parentName:"ul"},"broadcasting events to ",(0,n.kt)("a",{parentName:"li",href:"/docs/v4/broadcasting-events/"},"all")," (or a subset of) clients")),(0,n.kt)("p",null,"Besides the ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/socketio/socket.io-adapter/"},"in-memory adapter")," which is included by default with the Socket.IO server, there are currently 5 official adapters:"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"the ",(0,n.kt)("a",{parentName:"li",href:"/docs/v4/redis-adapter/"},"Redis adapter")),(0,n.kt)("li",{parentName:"ul"},"the ",(0,n.kt)("a",{parentName:"li",href:"/docs/v4/redis-streams-adapter/"},"Redis Streams adapter")),(0,n.kt)("li",{parentName:"ul"},"the ",(0,n.kt)("a",{parentName:"li",href:"/docs/v4/mongo-adapter/"},"MongoDB adapter")),(0,n.kt)("li",{parentName:"ul"},"the ",(0,n.kt)("a",{parentName:"li",href:"/docs/v4/postgres-adapter/"},"Postgres adapter")),(0,n.kt)("li",{parentName:"ul"},"the ",(0,n.kt)("a",{parentName:"li",href:"/docs/v4/cluster-adapter/"},"Cluster adapter"))),(0,n.kt)("p",null,"The in-memory adapter can be extended to add support for other messaging systems, like RabbitMQ or Google Pub/Sub for example."),(0,n.kt)("p",null,"Please see the documentation ",(0,n.kt)("a",{parentName:"p",href:"/docs/v4/adapter/"},"here"),"."),(0,n.kt)("h2",{id:"engineio"},"Engine.IO"),(0,n.kt)("p",null,"Engine.IO is an internal component of Socket.IO, which is responsible for establishing the low-level connection between the server and the client."),(0,n.kt)("p",null,"You will find more information ",(0,n.kt)("a",{parentName:"p",href:"/docs/v4/how-it-works/"},"here"),"."),(0,n.kt)("h2",{id:"namespace"},"Namespace"),(0,n.kt)("p",null,"A Namespace is a concept that allows splitting the application logic on the server-side."),(0,n.kt)("p",null,"Please see the documentation ",(0,n.kt)("a",{parentName:"p",href:"/docs/v4/namespaces/"},"here"),"."),(0,n.kt)("h2",{id:"room"},"Room"),(0,n.kt)("p",null,"A Room is a server-side concept that allows broadcasting data to a subset of clients."),(0,n.kt)("p",null,"Please see the documentation ",(0,n.kt)("a",{parentName:"p",href:"/docs/v4/rooms/"},"here"),"."),(0,n.kt)("h2",{id:"transport"},"Transport"),(0,n.kt)("p",null,"A Transport represents the low-level way of establishing a connection between the server and the client."),(0,n.kt)("p",null,"There are currently three implemented transports:"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"HTTP long-polling"),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API"},"WebSocket")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://developer.mozilla.org/en-US/docs/Web/API/WebTransport_API"},"WebTransport"))),(0,n.kt)("p",null,"Please see the documentation ",(0,n.kt)("a",{parentName:"p",href:"/docs/v4/how-it-works/#transports"},"here"),"."))}u.isMDXComponent=!0}}]);