Server-side events
Developing a application that uses server-sent events is straightforward. You'll need a bit of code on the server to stream events to the front-end, but the client side code works almost identically to sockets in part of handling incoming events. This is a one-way connection, so you can't send events from a client to a server.
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Server sent events (SSE) is a pushing technology that enables pushing notification/message/events from the server to the client (s) via HTTP connection. While you are developing real-time.
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Server-Sent Events (SSE) is a server push technology enabling a client to receive automatic updates from a server via an HTTP connection, and describes how servers can initiate data transmission towards clients once an initial client connection has been established.
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The Server-Sent Events (SSE) API enables pushing messages/updates from a server to the page via HTTP connection.
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Server-Sent Events (SSE) is a technology based on HTTP. On the client-side, it provides an API called EventSource (part of the HTML5 standard) that allows us to connect to the server and receive updates from it. Before making the decision to use server-sent events, we must take into account two very important aspects.
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With server-sent events, it's possible for a server to send new data to a page at any time, by pushing messages to the page. These incoming messages can be treated as Events + data inside the page. To learn how to use server-sent events, see our article Using server-sent events.