Generic real-time gateway
Vendor-neutral real-time gateway. Use when the real product is not in the catalogue; every rule for this kind still applies.
- Provider
- default
- Category
- Edge
- Official docs
- not recorded
- Generic?
- Vendor-neutral: the kind itself
| property | type | values | required | default |
|---|---|---|---|---|
| ackIntervalSeconds | integer | — | no | — |
| autoscaling | boolean | — | no | false |
| channelAssignment | enum | random | hash | sticky | no | random |
| drainOnScaleIn | boolean | — | no | false |
| managed | boolean | — | no | false |
| protocol | enum | websocket | sse | long-poll | grpc-stream | udp-multicast | no | websocket |
| pushFallback | boolean | — | no | false |
| sequenceNumbers | boolean | — | no | false |
| stampedeGuard | boolean | — | no | false |
| stateful | boolean | — | no | true |
| subscriptionsPerUser | integer | — | no | — |
Every rule whose selector covers this component's kind or its category. Whether a rule fires depends on the design: its properties, its edges and its groups.
When a gateway holding millions of sockets restarts, every client reconnects at once and the gateway asks the coordination service about each of them. Without a stampede guard that lookup storm takes the coordination service down too.
- — all of these hold:
- — the node has at least one synchronous outgoing edge to a coordination-service
- — the node's `stampedeGuard` is false
With heavy-tail traffic a few channels carry most of the load. Assigning channels at random lands those hot channels on arbitrary hosts, and every tenant sharing a host suffers for it.
- — all of these hold:
- — the node's `channelAssignment` is "random"
- — the design requirement `traffic.skew` is "heavy-tail"
Scaling a gateway down kills every live WebSocket on the removed instance at once. Without a drain step those clients all reconnect together.
- — all of these hold:
- — the node's `autoscaling` is true
- — the node's `drainOnScaleIn` is false
nodes:
- { id: "realtime-gateway", component: "realtime-gateway" }# yaml-language-server: $schema=../../schema/component.schema.json # The vendor-neutral real-time gateway: the kind itself, with no product behind it. It sets no # defaults and adds no properties, so every required kind property stays required on the node. schemaVersion: "1" type: "component" id: "realtime-gateway" kind: "realtime-gateway" provider: "default"