feat: add in-memory cache to github events

app/features/providers/github/commands/getPastEvents.ts

@@ -8,13 +8,17 @@ import {
 } from '~/features/providers/misc/http'
 import { mapIssuesToEvents } from './misc/mapIssueToEvent'
 import type { Event } from './types'
+import { cache } from './misc/cache'
 
 export const getPastEvents = async (
   nextToken?: String
 ): Promise<ApiResponse<Event[]>> => {
   try {
-    const client = newGraphQLClientFactory()
+    if (cache.has('pastEvents')) {
+      return newSuccessfulResponse(cache.get('pastEvents'))
+    }
 
+    const client = newGraphQLClientFactory()
     const res = await client<GetPastEventsQuery>(getPastEventsQuery, {
       owner: 'cyprus-developer-community',
       repo: 'events',
@@ -23,7 +27,7 @@ export const getPastEvents = async (
     })
 
     const events = await mapIssuesToEvents(res.repository.issues.nodes)
-
+    cache.set('pastEvents', events, 60 * 60 * 24)
     return newSuccessfulResponse(events)
   } catch (e) {
     return newErrorResponse(e)

app/features/providers/github/commands/getUpcomingEvents.ts

@@ -8,13 +8,17 @@ import {
 } from '~/features/providers/misc/http'
 import type { Event } from './types'
 import { mapIssuesToEvents } from './misc/mapIssueToEvent'
+import { cache } from './misc/cache'
 
 export const getUpcomingEvents = async (
   nextToken?: String
 ): Promise<ApiResponse<Event[]>> => {
   try {
-    const client = newGraphQLClientFactory()
+    if (cache.has('upcomingEvents')) {
+      return newSuccessfulResponse(cache.get('upcomingEvents'))
+    }
 
+    const client = newGraphQLClientFactory()
     const res = await client<GetUpcomingEventsQuery>(getUpcomingEventsQuery, {
       owner: 'cyprus-developer-community',
       repo: 'events',
@@ -23,6 +27,7 @@ export const getUpcomingEvents = async (
     })
 
     const events = await mapIssuesToEvents(res.repository.issues.nodes)
+    cache.set('upcomingEvents', events, 60 * 60 * 24)
     return newSuccessfulResponse(events)
   } catch (e) {
     return newErrorResponse(e)

app/features/providers/github/commands/misc/cache.ts

@@ -0,0 +1,17 @@
+import NodeCache from 'node-cache'
+let cache: NodeCache
+
+declare global {
+  var __cache: NodeCache | undefined
+}
+
+if (process.env.NODE_ENV === 'production') {
+  cache = new NodeCache()
+} else {
+  if (!global.__cache) {
+    global.__cache = new NodeCache()
+  }
+  cache = global.__cache
+}
+
+export { cache }

package.json

@@ -63,6 +63,7 @@
     "date-fns-tz": "^2.0.0",
     "graphql": "^16.6.0",
     "marked": "^4.2.12",
+    "node-cache": "^5.1.2",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "react-error-boundary": "^4.0.11",