diff --git a/packages/backend/src/CoreModule.js b/packages/backend/src/CoreModule.js
index 6ae1c420..c16ef57f 100644
--- a/packages/backend/src/CoreModule.js
+++ b/packages/backend/src/CoreModule.js
@@ -216,6 +216,9 @@ const install = async ({ services, app }) => {
 
     const { PuterHomepageService } = require('./services/PuterHomepageService');
     services.registerService('puter-homepage', PuterHomepageService);
+
+    const { GetUserService } = require('./services/GetUserService');
+    services.registerService('get-user', GetUserService);
 }
 
 const install_legacy = async ({ services }) => {
diff --git a/packages/backend/src/helpers.js b/packages/backend/src/helpers.js
index e2b80964..3ceb9efc 100644
--- a/packages/backend/src/helpers.js
+++ b/packages/backend/src/helpers.js
@@ -176,65 +176,8 @@ async function id2uuid(id){
  * @param {string} options - `options`
  * @returns {Promise}
  */
- async function get_user(options){
-    /** @type BaseDatabaseAccessService */
-    const db = services.get('database').get(DB_READ, 'filesystem');
-
-    let user;
-
-    const cached = options.cached ?? true;
-
-    if ( cached && ! options.force ) {
-        if (options.username) user = kv.get('users:username:' + options.username);
-        else if (options.email) user = kv.get('users:email:' + options.email);
-        else if (options.uuid) user = kv.get('users:uuid:' + options.uuid);
-        else if (options.id) user = kv.get('users:id:' + options.id);
-        else if (options.referral_code) user = kv.get('users:referral_code:' + options.referral_code);
-
-        if ( user ) return user;
-    }
-
-    if ( ! options.force ) {
-        if(options.username)
-            user = await db.read("SELECT * FROM `user` WHERE `username` = ? LIMIT 1", [options.username]);
-        else if(options.email)
-            user = await db.read("SELECT * FROM `user` WHERE `email` = ? LIMIT 1", [options.email]);
-        else if(options.uuid)
-            user = await db.read("SELECT * FROM `user` WHERE `uuid` = ? LIMIT 1", [options.uuid]);
-        else if(options.id)
-            user = await db.read("SELECT * FROM `user` WHERE `id` = ? LIMIT 1", [options.id]);
-        else if(options.referral_code)
-            user = await db.read("SELECT * FROM `user` WHERE `referral_code` = ? LIMIT 1", [options.referral_code]);
-    }
-
-    if(!user || !user[0]){
-        if(options.username)
-            user = await db.pread("SELECT * FROM `user` WHERE `username` = ? LIMIT 1", [options.username])
-        else if(options.email)
-            user = await db.pread("SELECT * FROM `user` WHERE `email` = ? LIMIT 1", [options.email]);
-        else if(options.uuid)
-            user = await db.pread("SELECT * FROM `user` WHERE `uuid` = ? LIMIT 1", [options.uuid]);
-        else if(options.id)
-            user = await db.pread("SELECT * FROM `user` WHERE `id` = ? LIMIT 1", [options.id]);
-        else if(options.referral_code)
-            user = await db.pread("SELECT * FROM `user` WHERE `referral_code` = ? LIMIT 1", [options.referral_code]);
-    }
-
-    user = user ? user[0] : null;
-
-    if ( ! user ) return user;
-
-    try {
-        kv.set('users:username:' + user.username, user);
-        kv.set('users:email:' + user.email, user);
-        kv.set('users:uuid:' + user.uuid, user);
-        kv.set('users:id:' + user.id, user);
-        kv.set('users:referral_code:' + user.referral_code, user);
-    } catch (e) {
-        console.error(e);
-    }
-
-    return user;
+async function get_user(options) {
+    return await services.get('get-user').get_user(options);
 }
 
 /**
diff --git a/packages/backend/src/services/GetUserService.js b/packages/backend/src/services/GetUserService.js
new file mode 100644
index 00000000..9c3e695e
--- /dev/null
+++ b/packages/backend/src/services/GetUserService.js
@@ -0,0 +1,89 @@
+const BaseService = require("./BaseService");
+const { DB_READ } = require("./database/consts");
+
+/**
+ * Get user by one of a variety of identifying properties.
+ * 
+ * Pass `cached: false` to options to force a database read.
+ * Pass `force: true` to options to force a primary database read.
+ * 
+ * This provides the functionality of `get_user` (helpers.js)
+ * as a service so that other services can register identifying
+ * properties for caching.
+ * 
+ * The original `get_user` function now uses this service.
+ */
+class GetUserService extends BaseService {
+    _construct () {
+        this.id_properties = new Set();
+
+        this.id_properties.add('username');
+        this.id_properties.add('uuid');
+        this.id_properties.add('id');
+        this.id_properties.add('email');
+        this.id_properties.add('referral_code');
+    }
+    async _init () {
+    }
+    async get_user (options) {
+        const services = this.services;
+
+        /** @type BaseDatabaseAccessService */
+        const db = services.get('database').get(DB_READ, 'filesystem');
+
+        const cached = options.cached ?? true;
+
+        if ( cached && ! options.force ) {
+            for ( const prop of this.id_properties ) {
+                if ( options.hasOwnProperty(prop) ) {
+                    const user = kv.get(`users:${prop}:${options[prop]}`);
+                    if ( user ) return user;
+                }
+            }
+        }
+
+        let user;
+
+        if ( ! options.force ) {
+            for ( const prop of this.id_properties ) {
+                if ( options.hasOwnProperty(prop) ) {
+                    [user] = await db.read(`SELECT * FROM \`user\` WHERE \`${prop}\` = ? LIMIT 1`, [options[prop]]);
+                    if ( user ) break;
+                }
+            }
+        }
+
+        if ( ! user || ! user[0] ) {
+            for ( const prop of this.id_properties ) {
+                if ( options.hasOwnProperty(prop) ) {
+                    [user] = await db.pread(`SELECT * FROM \`user\` WHERE \`${prop}\` = ? LIMIT 1`, [options[prop]]);
+                    if ( user ) break;
+                }
+            }
+        }
+
+        if ( ! user ) return null;
+
+        try {
+            for ( const prop of this.id_properties ) {
+                if ( user[prop] ) {
+                    kv.set(`users:${prop}:${user[prop]}`, user);
+                }
+            }
+            // kv.set('users:username:' + user.username, user);
+            // kv.set('users:email:' + user.email, user);
+            // kv.set('users:uuid:' + user.uuid, user);
+            // kv.set('users:id:' + user.id, user);
+            // kv.set('users:referral_code:' + user.referral_code, user);
+        } catch (e) {
+            console.error(e);
+        }
+
+        return user;
+    }
+    register_id_property (prop) {
+        this.id_properties.add(prop);
+    }
+}
+
+module.exports = { GetUserService };
\ No newline at end of file