Add store factory

README.md

@@ -187,7 +187,7 @@ For more details, see here:
 - [x] Reduce production build size by removing Pug. (Fixed in 2d14e5f c743f19)
 - [x] Add ability to share files (Fixed in 3877893)
 - [ ] Enable node cluster support (to scale vertically).
-- [ ] Add Socket.IO support for Redis (to scale horizontally).
+- [x] Add Socket.IO support for Redis (to scale horizontally).
 - [ ] Generate public keys for each client, and allow each client to accept,
       deny, and remember allowed/denied connections to specific peers.
 - [ ] Add support for browser push notifications

src/server/config.ts

@@ -21,6 +21,16 @@ export interface Config {
     cert: string
     key: string
   }
+  store?: StoreConfig
+}
+
+export type StoreConfig = {
+  host: string
+  port: number
+  prefix: string
+  type: 'redis'
+} | {
+  type: 'memory'
 }
 
 const cfg = readConfig()

src/server/store/factory.ts

@@ -0,0 +1,17 @@
+import { MemoryStore } from './memory'
+import { RedisStore } from './redis'
+import Redis from 'ioredis'
+import { StoreConfig } from '../config'
+import { Store } from './store'
+
+export function createStore(config: StoreConfig = { type: 'memory'}): Store {
+  switch (config.type) {
+    case 'redis':
+      return new RedisStore(new Redis({
+        host: config.host,
+        port: config.port,
+      }), config.prefix)
+    default:
+      return new MemoryStore()
+  }
+}