Real time push messaging

Push messaging allows events that occur on servers to be pushed to end users without the user having to refresh or request an update. There are several types of push messaging, suitable for different use cases. Using Fastly for real time messaging reduces load on your origin servers, allows messages to be routed efficiently to large numbers of clients, and offers extremely low latency.

Websockets passthroughStreaming missFanout
IllustrationIllustrationIllustration
One-to-oneOne-to-manyBrokered
Origin-client relationshipEach client has a pipe directly to origin. Fastly disregards the content.Fastly's cache allows multiple clients to get the same streamed response from originEvents you publish to Fastly are routed to clients based on channel subscriptions
Server to clientYesYesYes
Client to serverYesNoYes
DDoS protectionYesYesYes
Supported transportsWebsocketsServer-sent-eventsWebsockets
Server-sent-events
Long poll
Learn more >Learn more >Learn more >