feature: subscription HTTP callback support about dgs-framework HOT 6 OPEN

On Mon, Jan 8, 2024 at 3:08 PM Dariusz Kuc ***@***.***> wrote: Describe the Feature Request GraphQL subscriptions enable clients to receive continual, real-time updates whenever new data becomes available. Unlike queries and mutations, subscriptions are long-lasting. This means a client can receive multiple updates from a single subscription. WebSocket is the most commonly used subscription mechanism but it comes with few drawbacks - most notably it requires long lasting open connections. Apollo Router supports subscriptions using both the WebSocket and HTTP callback <https://www.apollographql.com/docs/router/executing-operations/subscription-callback-protocol/> mechanism. HTTP callback protocol allows GraphQL servers to asynchronously send their subscription updates using regular HTTP POST requests which in turn allows you to scale you servers more easily. HTTP callback protocol flow <https://www.apollographql.com/docs/router/executing-operations/subscription-callback-protocol/> - initialization - router generates new unique subscription ID - routers sends subscription operation with additional extension data using regular HTTP POST request - subgraph responds with a check message - router responds with HTTP 204 (if successful) - subgraph responds with empty { "data": null } GraphQL response - main loop (run on some background thread) - subgraph sends heartbeats every X milliseconds (if enabled) - whenever new data is available, subgraph sends next message followed by complete message at the end of the stream See also: - federation-jvm spring-graphl implementation of the protocol [link <apollographql/federation-jvm#354> fix <apollographql/federation-jvm#360>] Describe Preferred Solution DGS provides out of the box support for subscriptions using HTTP callback protocol. Describe Alternatives WebSocket based subscriptions are still viable option but don't scale as nicely. — Reply to this email directly, view it on GitHub <#1771>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJ5JPXLWCSHGWGJMEGK25I3YNR365AVCNFSM6AAAAABBSGJE6WVHI2DSMVQWIX3LMV43ASLTON2WKOZSGA3TCMZWG42DIMY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

On Mon, Apr 8, 2024 at 2:50 PM Greg Wardwell ***@***.***> wrote: Does the release of DGS 8.5.0 <https://github.com/Netflix/dgs-framework/releases/tag/v8.5.0> with Spring GraphQL integration mean subscription HTTP callbacks are now supported? — Reply to this email directly, view it on GitHub <#1771 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAA2XLCKCMF6IWXKIHLZCH3Y4MGLRAVCNFSM6AAAAABBSGJE6WVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDANBTGY4TSNBVGA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>