feat: cache for session store in db

server/package.json

@@ -24,6 +24,7 @@
     "fast-fuzzy": "^1.12.0",
     "file-type-mime": "^0.4.3",
     "jdenticon": "^3.3.0",
+    "lru-cache": "^11.1.0",
     "micromark": "^4.0.1",
     "moment": "^2.30.1",
     "nuxt": "^3.13.2",

server/server/internal/session/db.ts

@@ -1,11 +1,18 @@
-import { json } from "stream/consumers";
+import { LRUCache } from "lru-cache";
 import prisma from "../db/database";
 import { Session, SessionProvider } from "./types";
 import { Prisma } from "@prisma/client";
 
 export default function createDBSessionHandler(): SessionProvider {
+  const cache = new LRUCache<string, Session>({
+    max: 50, // number of items
+    ttl: 30 * 100, // 30s (in ms)
+  });
+
   return {
     async setSession(token, data) {
+      cache.set(token, data);
+
       //   const strData = JSON.stringify(data);
       await prisma.session.upsert({
         where: {
@@ -24,6 +31,7 @@ export default function createDBSessionHandler(): SessionProvider {
     async updateSession(token, key, data) {
       const newObj: { [key: string]: any } = {};
       newObj[key] = data;
+      cache.set(token, newObj);
 
       const session = await prisma.session.upsert({
         where: {
@@ -60,6 +68,9 @@ export default function createDBSessionHandler(): SessionProvider {
       return false;
     },
     async getSession<T>(token: string) {
+      const cached = cache.get(token);
+      if (cached !== undefined) return cached as T;
+
       const result = await prisma.session.findUnique({
         where: {
           token,
@@ -69,6 +80,7 @@ export default function createDBSessionHandler(): SessionProvider {
       return result.data as T;
     },
     async clearSession(token) {
+      cache.delete(token);
       await prisma.session.delete({
         where: {
           token,

server/yarn.lock

@@ -4282,6 +4282,11 @@ lru-cache@^10.2.0, lru-cache@^10.4.3:
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-10.4.3.tgz#410fc8a17b70e598013df257c2446b7f3383f119"
   integrity sha512-JNAzZcXrCt42VGLuYz0zfAzDfAvJWW6AfYlDBQyDV5DClI2m5sAmK+OIO7s59XfsRsWHp02jAJrRadPRGTt6SQ==
 
+lru-cache@^11.1.0:
+  version "11.1.0"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-11.1.0.tgz#afafb060607108132dbc1cf8ae661afb69486117"
+  integrity sha512-QIXZUBJUx+2zHUdQujWejBkcD9+cs94tLn0+YL8UrCh+D5sCXZ4c7LaEH48pNwRY3MLDgqUFyhlCyjJPf1WP0A==
+
 lru-cache@^5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-5.1.1.tgz#1da27e6710271947695daf6848e847f01d84b920"