Adding Caching Adapter, allows caching of _Role and _User queries (fixes #168) (#1664)

* Adding Caching Adapter, allows caching of _Role and _User queries.

spec/CacheController.spec.js

@@ -0,0 +1,74 @@
+var CacheController = require('../src/Controllers/CacheController.js').default;
+
+describe('CacheController', function() {
+  var FakeCacheAdapter;
+  var FakeAppID = 'foo';
+  var KEY = 'hello';
+
+  beforeEach(() => {
+    FakeCacheAdapter = {
+      get: () => Promise.resolve(null),
+      put: jasmine.createSpy('put'),
+      del: jasmine.createSpy('del'),
+      clear: jasmine.createSpy('clear')
+    }
+
+    spyOn(FakeCacheAdapter, 'get').and.callThrough();
+  });
+
+
+  it('should expose role and user caches', (done) => {
+    var cache = new CacheController(FakeCacheAdapter, FakeAppID);
+
+    expect(cache.role).not.toEqual(null);
+    expect(cache.role.get).not.toEqual(null);
+    expect(cache.user).not.toEqual(null);
+    expect(cache.user.get).not.toEqual(null);
+
+    done();
+  });
+
+
+  ['role', 'user'].forEach((cacheName) => {
+    it('should prefix ' + cacheName + ' cache', () => {
+      var cache = new CacheController(FakeCacheAdapter, FakeAppID)[cacheName];
+
+      cache.put(KEY, 'world');
+      var firstPut = FakeCacheAdapter.put.calls.first();
+      expect(firstPut.args[0]).toEqual([FakeAppID, cacheName, KEY].join(':'));
+
+      cache.get(KEY);
+      var firstGet = FakeCacheAdapter.get.calls.first();
+      expect(firstGet.args[0]).toEqual([FakeAppID, cacheName, KEY].join(':'));
+
+      cache.del(KEY);
+      var firstDel = FakeCacheAdapter.del.calls.first();
+      expect(firstDel.args[0]).toEqual([FakeAppID, cacheName, KEY].join(':'));
+    });
+  });
+
+  it('should clear the entire cache', () => {
+    var cache = new CacheController(FakeCacheAdapter, FakeAppID);
+
+    cache.clear();
+    expect(FakeCacheAdapter.clear.calls.count()).toEqual(1);
+
+    cache.user.clear();
+    expect(FakeCacheAdapter.clear.calls.count()).toEqual(2);
+
+    cache.role.clear();
+    expect(FakeCacheAdapter.clear.calls.count()).toEqual(3);
+  });
+
+  it('should handle cache rejections', (done) => {
+
+      FakeCacheAdapter.get = () => Promise.reject();
+
+      var cache = new CacheController(FakeCacheAdapter, FakeAppID);
+
+      cache.get('foo').then(done, () => {
+          fail('Promise should not be rejected.');
+      });
+  });
+
+});

spec/InMemoryCache.spec.js

@@ -0,0 +1,74 @@
+const InMemoryCache = require('../src/Adapters/Cache/InMemoryCache').default;
+
+
+describe('InMemoryCache', function() {
+  var BASE_TTL = {
+    ttl: 10
+  };
+  var NO_EXPIRE_TTL = {
+    ttl: NaN
+  };
+  var KEY = 'hello';
+  var KEY_2 = KEY + '_2';
+
+  var VALUE = 'world';
+
+
+  function wait(sleep) {
+    return new Promise(function(resolve, reject) {
+      setTimeout(resolve, sleep);
+    })
+  }
+
+  it('should destroy a expire items in the cache', (done) => {
+    var cache = new InMemoryCache(BASE_TTL);
+
+    cache.put(KEY, VALUE);
+
+    var value = cache.get(KEY);
+    expect(value).toEqual(VALUE);
+
+    wait(BASE_TTL.ttl * 5).then(() => {
+      value = cache.get(KEY)
+      expect(value).toEqual(null);
+      done();
+    });
+  });
+
+  it('should delete items', (done) => {
+    var cache = new InMemoryCache(NO_EXPIRE_TTL);
+    cache.put(KEY, VALUE);
+    cache.put(KEY_2, VALUE);
+    expect(cache.get(KEY)).toEqual(VALUE);
+    expect(cache.get(KEY_2)).toEqual(VALUE);
+
+    cache.del(KEY);
+    expect(cache.get(KEY)).toEqual(null);
+    expect(cache.get(KEY_2)).toEqual(VALUE);
+
+    cache.del(KEY_2);
+    expect(cache.get(KEY)).toEqual(null);
+    expect(cache.get(KEY_2)).toEqual(null);
+    done();
+  });
+
+  it('should clear all items', (done) => {
+    var cache = new InMemoryCache(NO_EXPIRE_TTL);
+    cache.put(KEY, VALUE);
+    cache.put(KEY_2, VALUE);
+
+    expect(cache.get(KEY)).toEqual(VALUE);
+    expect(cache.get(KEY_2)).toEqual(VALUE);
+    cache.clear();
+
+    expect(cache.get(KEY)).toEqual(null);
+    expect(cache.get(KEY_2)).toEqual(null);
+    done();
+  });
+
+  it('should deafult TTL to 5 seconds', () => {
+    var cache = new InMemoryCache({});
+    expect(cache.ttl).toEqual(5 * 1000);
+  });
+
+});

spec/InMemoryCacheAdapter.spec.js

@@ -0,0 +1,59 @@
+var InMemoryCacheAdapter = require('../src/Adapters/Cache/InMemoryCacheAdapter').default;
+
+describe('InMemoryCacheAdapter', function() {
+  var KEY = 'hello';
+  var VALUE = 'world';
+
+  function wait(sleep) {
+    return new Promise(function(resolve, reject) {
+      setTimeout(resolve, sleep);
+    })
+  }
+
+  it('should expose promisifyed methods', (done) => {
+    var cache = new InMemoryCacheAdapter({
+      ttl: NaN
+    });
+
+    var noop = () => {};
+
+    // Verify all methods return promises.
+    Promise.all([
+      cache.put(KEY, VALUE),
+      cache.del(KEY),
+      cache.get(KEY),
+      cache.clear()
+    ]).then(() => {
+      done();
+    });
+  });
+
+  it('should get/set/clear', (done) => {
+    var cache = new InMemoryCacheAdapter({
+      ttl: NaN
+    });
+
+    cache.put(KEY, VALUE)
+      .then(() => cache.get(KEY))
+      .then((value) => expect(value).toEqual(VALUE))
+      .then(() => cache.clear())
+      .then(() => cache.get(KEY))
+      .then((value) => expect(value).toEqual(null))
+      .then(done);
+  });
+
+  it('should expire after ttl', (done) => {
+    var cache = new InMemoryCacheAdapter({
+      ttl: 10
+    });
+
+    cache.put(KEY, VALUE)
+      .then(() => cache.get(KEY))
+      .then((value) => expect(value).toEqual(VALUE))
+      .then(wait.bind(null, 50))
+      .then(() => cache.get(KEY))
+      .then((value) => expect(value).toEqual(null))
+      .then(done);
+  })
+
+});

spec/helper.js

@@ -63,7 +63,7 @@ const setServerConfiguration = configuration => {
   DatabaseAdapter.clearDatabaseSettings();
   currentConfiguration = configuration;
   server.close();
-  cache.clearCache();
+  cache.clear();
   app = express();
   api = new ParseServer(configuration);
   app.use('/1', api);

src/Adapters/Cache/CacheAdapter.js

@@ -0,0 +1,27 @@
+export class CacheAdapter {
+  /**
+   * Get a value in the cache
+   * @param key Cache key to get
+   * @return Promise that will eventually resolve to the value in the cache.
+   */
+  get(key) {}
+
+  /**
+   * Set a value in the cache
+   * @param key Cache key to set
+   * @param value Value to set the key
+   * @param ttl Optional TTL
+   */
+  put(key, value, ttl) {}
+
+  /**
+   * Remove a value from the cache.
+   * @param key Cache key to remove
+   */
+  del(key) {}
+
+  /**
+   * Empty a cache
+   */
+  clear() {}
+}

src/Adapters/Cache/InMemoryCache.js

@@ -0,0 +1,66 @@
+const DEFAULT_CACHE_TTL = 5 * 1000;
+
+
+export class InMemoryCache {
+  constructor({
+    ttl = DEFAULT_CACHE_TTL
+  }) {
+    this.ttl = ttl;
+    this.cache = Object.create(null);
+  }
+
+  get(key) {
+    let record = this.cache[key];
+    if (record == null) {
+      return null;
+    }
+
+    // Has Record and isnt expired
+    if (isNaN(record.expire) || record.expire >= Date.now()) {
+      return record.value;
+    }
+
+    // Record has expired
+    delete this.cache[key];
+    return null;
+  }
+
+  put(key, value, ttl = this.ttl) {
+    if (ttl < 0 || isNaN(ttl)) {
+      ttl = NaN;
+    }
+
+    var record = {
+      value: value,
+      expire: ttl + Date.now()
+    }
+
+    if (!isNaN(record.expire)) {
+      record.timeout = setTimeout(() => {
+        this.del(key);
+      }, ttl);
+    }
+
+    this.cache[key] = record;
+  }
+
+  del(key) {
+    var record = this.cache[key];
+    if (record == null) {
+      return;
+    }
+
+    if (record.timeout) {
+      clearTimeout(record.timeout);
+    }
+
+    delete this.cache[key];
+  }
+
+  clear() {
+    this.cache = Object.create(null);
+  }
+
+}
+
+export default InMemoryCache;

src/Adapters/Cache/InMemoryCacheAdapter.js

@@ -0,0 +1,36 @@
+import {InMemoryCache} from './InMemoryCache';
+
+export class InMemoryCacheAdapter {
+
+  constructor(ctx) {
+    this.cache = new InMemoryCache(ctx)
+  }
+
+  get(key) {
+    return new Promise((resolve, reject) => {
+      let record = this.cache.get(key);
+      if (record == null) {
+        return resolve(null);
+      }
+
+      return resolve(JSON.parse(record));
+    })
+  }
+
+  put(key, value, ttl) {
+    this.cache.put(key, JSON.stringify(value), ttl);
+    return Promise.resolve();
+  }
+
+  del(key) {
+    this.cache.del(key);
+    return Promise.resolve();
+  }
+
+  clear() {
+    this.cache.clear();
+    return Promise.resolve();
+  }
+}
+
+export default InMemoryCacheAdapter;

src/Auth.js

@@ -2,8 +2,6 @@ var deepcopy = require('deepcopy');
 var Parse = require('parse/node').Parse;
 var RestQuery = require('./RestQuery');
 
-import cache from './cache';
-
 // An Auth object tells you who is requesting something and whether
 // the master key was used.
 // userObject is a Parse.User and can be null if there's no user.
@@ -42,36 +40,42 @@ function nobody(config) {
   return new Auth({ config, isMaster: false });
 }
 
+
 // Returns a promise that resolves to an Auth object
 var getAuthForSessionToken = function({ config, sessionToken, installationId } = {}) {
-  var cachedUser = cache.users.get(sessionToken);
-  if (cachedUser) {
-    return Promise.resolve(new Auth({ config, isMaster: false, installationId, user: cachedUser }));
-  }
-  var restOptions = {
-    limit: 1,
-    include: 'user'
-  };
-  var query = new RestQuery(config, master(config), '_Session', { sessionToken }, restOptions);
-  return query.execute().then((response) => {
-    var results = response.results;
-    if (results.length !== 1 || !results[0]['user']) {
-      return nobody(config);
+  return config.cacheController.user.get(sessionToken).then((userJSON) => {
+    if (userJSON) {
+      let cachedUser = Parse.Object.fromJSON(userJSON);
+      return Promise.resolve(new Auth({config, isMaster: false, installationId, user: cachedUser}));
     }
 
-    var now = new Date(),
+    var restOptions = {
+      limit: 1,
+      include: 'user'
+    };
+
+    var query = new RestQuery(config, master(config), '_Session', {sessionToken}, restOptions);
+    return query.execute().then((response) => {
+      var results = response.results;
+      if (results.length !== 1 || !results[0]['user']) {
+        return nobody(config);
+      }
+
+      var now = new Date(),
         expiresAt = results[0].expiresAt ? new Date(results[0].expiresAt.iso) : undefined;
-    if(expiresAt < now) {
-      throw new Parse.Error(Parse.Error.INVALID_SESSION_TOKEN,
-            'Session token is expired.');
-    }
-    var obj = results[0]['user'];
-    delete obj.password;
-    obj['className'] = '_User';
-    obj['sessionToken'] = sessionToken;
-    let userObject = Parse.Object.fromJSON(obj);
-    cache.users.set(sessionToken, userObject);
-    return new Auth({ config, isMaster: false, installationId, user: userObject });
+      if (expiresAt < now) {
+        throw new Parse.Error(Parse.Error.INVALID_SESSION_TOKEN,
+          'Session token is expired.');
+      }
+      var obj = results[0]['user'];
+      delete obj.password;
+      obj['className'] = '_User';
+      obj['sessionToken'] = sessionToken;
+      config.cacheController.user.put(sessionToken, obj);
+
+      let userObject = Parse.Object.fromJSON(obj);
+      return new Auth({config, isMaster: false, installationId, user: userObject});
+    });
   });
 };
 
@@ -92,39 +96,50 @@ Auth.prototype.getUserRoles = function() {
 
 // Iterates through the role tree and compiles a users roles
 Auth.prototype._loadRoles = function() {
-  var restWhere = {
-    'users': {
-      __type: 'Pointer',
-      className: '_User',
-      objectId: this.user.id
+  var cacheAdapter = this.config.cacheController;
+  return cacheAdapter.role.get(this.user.id).then((cachedRoles) => {
+    if (cachedRoles != null) {
+      this.fetchedroles = true;
+      return Promise.resolve(cachedRoles);
     }
-  };
-  // First get the role ids this user is directly a member of
-  var query = new RestQuery(this.config, master(this.config), '_Role',
-                            restWhere, {});
-  return query.execute().then((response) => {
-    var results = response.results;
-    if (!results.length) {
-      this.userRoles = [];
-      this.fetchedRoles = true;
-      this.rolePromise = null;
-      return Promise.resolve(this.userRoles);
-    }
-    var rolesMap =  results.reduce((m, r) => {
-      m.names.push(r.name);
-      m.ids.push(r.objectId);
-      return m;
-    }, {ids: [], names: []});
 
-    // run the recursive finding
-    return this._getAllRolesNamesForRoleIds(rolesMap.ids, rolesMap.names)
-    .then((roleNames) => {
-      this.userRoles = roleNames.map((r) => {
-        return 'role:' + r;
-      });
-      this.fetchedRoles = true;
-      this.rolePromise = null;
-      return Promise.resolve(this.userRoles);
+    var restWhere = {
+      'users': {
+        __type: 'Pointer',
+        className: '_User',
+        objectId: this.user.id
+      }
+    };
+    // First get the role ids this user is directly a member of
+    var query = new RestQuery(this.config, master(this.config), '_Role', restWhere, {});
+    return query.execute().then((response) => {
+      var results = response.results;
+      if (!results.length) {
+        this.userRoles = [];
+        this.fetchedRoles = true;
+        this.rolePromise = null;
+
+        cacheAdapter.role.put(this.user.id, this.userRoles);
+        return Promise.resolve(this.userRoles);
+      }
+      var rolesMap = results.reduce((m, r) => {
+        m.names.push(r.name);
+        m.ids.push(r.objectId);
+        return m;
+      }, {ids: [], names: []});
+
+      // run the recursive finding
+      return this._getAllRolesNamesForRoleIds(rolesMap.ids, rolesMap.names)
+        .then((roleNames) => {
+          this.userRoles = roleNames.map((r) => {
+            return 'role:' + r;
+          });
+          this.fetchedRoles = true;
+          this.rolePromise = null;
+
+          cacheAdapter.role.put(this.user.id, this.userRoles);
+          return Promise.resolve(this.userRoles);
+        });
     });
   });
 };

src/Config.js

@@ -2,7 +2,7 @@
 // configured.
 // mount is the URL for the root of the API; includes http, domain, etc.
 
-import cache from './cache';
+import AppCache from './cache';
 
 function removeTrailingSlash(str) {
   if (!str) {
@@ -17,7 +17,7 @@ function removeTrailingSlash(str) {
 export class Config {
   constructor(applicationId: string, mount: string) {
     let DatabaseAdapter = require('./DatabaseAdapter');
-    let cacheInfo = cache.apps.get(applicationId);
+    let cacheInfo = AppCache.get(applicationId);
     if (!cacheInfo) {
       return;
     }
@@ -38,6 +38,7 @@ export class Config {
     this.verifyUserEmails = cacheInfo.verifyUserEmails;
     this.appName = cacheInfo.appName;
 
+    this.cacheController = cacheInfo.cacheController;
     this.hooksController = cacheInfo.hooksController;
     this.filesController = cacheInfo.filesController;
     this.pushController = cacheInfo.pushController;

src/Controllers/CacheController.js

@@ -0,0 +1,75 @@
+import AdaptableController from './AdaptableController';
+import CacheAdapter        from '../Adapters/Cache/CacheAdapter';
+
+const KEY_SEPARATOR_CHAR = ':';
+
+function joinKeys(...keys) {
+  return keys.join(KEY_SEPARATOR_CHAR);
+}
+
+/**
+ * Prefix all calls to the cache via a prefix string, useful when grouping Cache by object type.
+ *
+ * eg "Role" or "Session"
+ */
+export class SubCache {
+  constructor(prefix, cacheController) {
+    this.prefix = prefix;
+    this.cache = cacheController;
+  }
+
+  get(key) {
+    let cacheKey = joinKeys(this.prefix, key);
+    return this.cache.get(cacheKey);
+  }
+
+  put(key, value, ttl) {
+    let cacheKey = joinKeys(this.prefix, key);
+    return this.cache.put(cacheKey, value, ttl);
+  }
+
+  del(key) {
+    let cacheKey = joinKeys(this.prefix, key);
+    return this.cache.del(cacheKey);
+  }
+
+  clear() {
+    return this.cache.clear();
+  }
+}
+
+
+export class CacheController extends AdaptableController {
+
+  constructor(adapter, appId, options = {}) {
+    super(adapter, appId, options);
+
+    this.role = new SubCache('role', this);
+    this.user = new SubCache('user', this);
+  }
+
+  get(key) {
+    let cacheKey = joinKeys(this.appId, key);
+    return this.adapter.get(cacheKey).then(null, () => Promise.resolve(null));
+  }
+
+  put(key, value, ttl) {
+    let cacheKey = joinKeys(this.appId, key);
+    return this.adapter.put(cacheKey, value, ttl);
+  }
+
+  del(key) {
+    let cacheKey = joinKeys(this.appId, key);
+    return this.adapter.del(cacheKey);
+  }
+
+  clear() {
+    return this.adapter.clear();
+  }
+
+  expectedAdapterType() {
+    return CacheAdapter;
+  }
+}
+
+export default CacheController;

src/DatabaseAdapter.js

@@ -60,7 +60,7 @@ function getDatabaseConnection(appId: string, collectionPrefix: string) {
     uri: appDatabaseURIs[appId], //may be undefined if the user didn't supply a URI, in which case the default will be used
   }
 
-  dbConnections[appId] = new DatabaseController(new MongoStorageAdapter(mongoAdapterOptions));
+  dbConnections[appId] = new DatabaseController(new MongoStorageAdapter(mongoAdapterOptions), {appId: appId});
 
   return dbConnections[appId];
 }

src/ParseServer.js

@@ -15,8 +15,8 @@ if (!global._babelPolyfill) {
 }
 
 import { logger,
-      configureLogger }       from './logger';
-import cache                    from './cache';
+      configureLogger }         from './logger';
+import AppCache                 from './cache';
 import Config                   from './Config';
 import parseServerPackage       from '../package.json';
 import PromiseRouter            from './PromiseRouter';
@@ -24,6 +24,8 @@ import requiredParameter        from './requiredParameter';
 import { AnalyticsRouter }      from './Routers/AnalyticsRouter';
 import { ClassesRouter }        from './Routers/ClassesRouter';
 import { FeaturesRouter }       from './Routers/FeaturesRouter';
+import { InMemoryCacheAdapter } from './Adapters/Cache/InMemoryCacheAdapter';
+import { CacheController }      from './Controllers/CacheController';
 import { FileLoggerAdapter }    from './Adapters/Logger/FileLoggerAdapter';
 import { FilesController }      from './Controllers/FilesController';
 import { FilesRouter }          from './Routers/FilesRouter';
@@ -104,6 +106,7 @@ class ParseServer {
     serverURL = requiredParameter('You must provide a serverURL!'),
     maxUploadSize = '20mb',
     verifyUserEmails = false,
+    cacheAdapter,
     emailAdapter,
     publicServerURL,
     customPages = {
@@ -156,6 +159,8 @@ class ParseServer {
     const pushControllerAdapter = loadAdapter(push && push.adapter, ParsePushAdapter, push);
     const loggerControllerAdapter = loadAdapter(loggerAdapter, FileLoggerAdapter);
     const emailControllerAdapter = loadAdapter(emailAdapter);
+    const cacheControllerAdapter = loadAdapter(cacheAdapter, InMemoryCacheAdapter, {appId: appId});
+
     // We pass the options and the base class for the adatper,
     // Note that passing an instance would work too
     const filesController = new FilesController(filesControllerAdapter, appId);
@@ -164,8 +169,9 @@ class ParseServer {
     const hooksController = new HooksController(appId, collectionPrefix);
     const userController = new UserController(emailControllerAdapter, appId, { verifyUserEmails });
     const liveQueryController = new LiveQueryController(liveQuery);
+    const cacheController = new CacheController(cacheControllerAdapter, appId);
 
-    cache.apps.set(appId, {
+    AppCache.put(appId, {
       masterKey: masterKey,
       serverURL: serverURL,
       collectionPrefix: collectionPrefix,
@@ -175,6 +181,7 @@ class ParseServer {
       restAPIKey: restAPIKey,
       fileKey: fileKey,
       facebookAppIds: facebookAppIds,
+      cacheController: cacheController,
       filesController: filesController,
       pushController: pushController,
       loggerController: loggerController,
@@ -195,11 +202,11 @@ class ParseServer {
 
     // To maintain compatibility. TODO: Remove in some version that breaks backwards compatability
     if (process.env.FACEBOOK_APP_ID) {
-      cache.apps.get(appId)['facebookAppIds'].push(process.env.FACEBOOK_APP_ID);
+      AppCache.get(appId)['facebookAppIds'].push(process.env.FACEBOOK_APP_ID);
     }
 
-    Config.validate(cache.apps.get(appId));
-    this.config = cache.apps.get(appId);
+    Config.validate(AppCache.get(appId));
+    this.config = AppCache.get(appId);
     hooksController.load();
   }
 

src/RestWrite.js

@@ -2,7 +2,6 @@
 // that writes to the database.
 // This could be either a "create" or an "update".
 
-import cache from './cache';
 var SchemaController = require('./Controllers/SchemaController');
 var deepcopy = require('deepcopy');
 
@@ -310,6 +309,7 @@ RestWrite.prototype.handleAuthData = function(authData) {
   });
 }
 
+
 // The non-third-party parts of User transformation
 RestWrite.prototype.transformUser = function() {
   if (this.className !== '_User') {
@@ -320,7 +320,8 @@ RestWrite.prototype.transformUser = function() {
 
   // If we're updating a _User object, clear the user cache for the session
   if (this.query && this.auth.user && this.auth.user.getSessionToken()) {
-    cache.users.remove(this.auth.user.getSessionToken());
+    let cacheAdapter = this.config.cacheController;
+    cacheAdapter.user.del(this.auth.user.getSessionToken());
   }
 
   return promise.then(() => {
@@ -441,24 +442,6 @@ RestWrite.prototype.handleFollowup = function() {
   }
 };
 
-// Handles the _Role class specialness.
-// Does nothing if this isn't a role object.
-RestWrite.prototype.handleRole = function() {
-  if (this.response || this.className !== '_Role') {
-    return;
-  }
-
-  if (!this.auth.user && !this.auth.isMaster) {
-    throw new Parse.Error(Parse.Error.INVALID_SESSION_TOKEN,
-                          'Session token required.');
-  }
-
-  if (!this.data.name) {
-    throw new Parse.Error(Parse.Error.INVALID_ROLE_NAME,
-                          'Invalid role name.');
-  }
-};
-
 // Handles the _Session class specialness.
 // Does nothing if this isn't an installation object.
 RestWrite.prototype.handleSession = function() {
@@ -716,6 +699,10 @@ RestWrite.prototype.runDatabaseOperation = function() {
     return;
   }
 
+  if (this.className === '_Role') {
+    this.config.cacheController.role.clear();
+  }
+
   if (this.className === '_User' &&
       this.query &&
       !this.auth.couldUpdateUserId(this.query.objectId)) {

src/cache.js

@@ -1,35 +1,4 @@
-/** @flow weak */
+import {InMemoryCache} from './Adapters/Cache/InMemoryCache';
 
-export function CacheStore<KeyType, ValueType>() {
-  let dataStore: {[id:KeyType]:ValueType} = {};
-  return {
-    get: (key: KeyType): ValueType => {
-      return dataStore[key];
-    },
-    set(key: KeyType, value: ValueType): void {
-      dataStore[key] = value;
-    },
-    remove(key: KeyType): void {
-      delete dataStore[key];
-    },
-    clear(): void {
-      dataStore = {};
-    }
-  };
-}
-
-const apps = CacheStore();
-const users = CacheStore();
-
-//So far used only in tests
-export function clearCache(): void {
-  apps.clear();
-  users.clear();
-}
-
-export default {
-  apps,
-  users,
-  clearCache,
-  CacheStore
-};
+export var AppCache = new InMemoryCache({ttl: NaN});
+export default AppCache;

src/middlewares.js

@@ -1,5 +1,5 @@
-import cache from './cache';
-import log   from './logger';
+import AppCache from './cache';
+import log      from './logger';
 
 var Parse = require('parse/node').Parse;
 
@@ -36,7 +36,7 @@ function handleParseHeaders(req, res, next) {
 
   var fileViaJSON = false;
 
-  if (!info.appId || !cache.apps.get(info.appId)) {
+  if (!info.appId || !AppCache.get(info.appId)) {
     // See if we can find the app id on the body.
     if (req.body instanceof Buffer) {
       // The only chance to find the app id is if this is a file
@@ -51,8 +51,8 @@ function handleParseHeaders(req, res, next) {
 
     if (req.body &&
       req.body._ApplicationId &&
-      cache.apps.get(req.body._ApplicationId) &&
-      (!info.masterKey || cache.apps.get(req.body._ApplicationId).masterKey === info.masterKey)
+      AppCache.get(req.body._ApplicationId) &&
+      (!info.masterKey || AppCache.get(req.body._ApplicationId).masterKey === info.masterKey)
     ) {
       info.appId = req.body._ApplicationId;
       info.javascriptKey = req.body._JavaScriptKey || '';
@@ -87,7 +87,7 @@ function handleParseHeaders(req, res, next) {
     req.body = new Buffer(base64, 'base64');
   }
 
-  info.app = cache.apps.get(info.appId);
+  info.app = AppCache.get(info.appId);
   req.config = new Config(info.appId, mount);
   req.info = info;
 

src/rest.js

@@ -8,8 +8,7 @@
 // things.
 
 var Parse = require('parse/node').Parse;
-import cache from './cache';
-import Auth  from './Auth';
+import Auth from './Auth';
 
 var RestQuery = require('./RestQuery');
 var RestWrite = require('./RestWrite');
@@ -48,7 +47,9 @@ function del(config, auth, className, objectId) {
       .then((response) => {
         if (response && response.results && response.results.length) {
           response.results[0].className = className;
-          cache.users.remove(response.results[0].sessionToken);
+
+          var cacheAdapter = config.cacheController;
+          cacheAdapter.user.del(response.results[0].sessionToken);
           inflatedObject = Parse.Object.fromJSON(response.results[0]);
           // Notify LiveQuery server if possible
           config.liveQueryController.onAfterDelete(inflatedObject.className, inflatedObject);
@@ -96,6 +97,7 @@ function create(config, auth, className, restObject) {
 // Usually, this is just updatedAt.
 function update(config, auth, className, objectId, restObject) {
   enforceRoleSecurity('update', className, auth);
+
   return Promise.resolve().then(() => {
     if (triggers.getTrigger(className, triggers.Types.beforeSave, config.applicationId) ||
         triggers.getTrigger(className, triggers.Types.afterSave, config.applicationId) ||

src/testing-routes.js

@@ -1,5 +1,5 @@
 // testing-routes.js
-import cache            from './cache';
+import AppCache         from './cache';
 import * as middlewares from './middlewares';
 import { ParseServer }  from './index';
 import { Parse }        from 'parse/node';
@@ -47,7 +47,7 @@ function dropApp(req, res) {
     return res.status(401).send({ "error": "unauthorized" });
   }
   return req.config.database.deleteEverything().then(() => {
-    cache.apps.remove(req.config.applicationId);
+    AppCache.del(req.config.applicationId);
     res.status(200).send({});
   });
 }

src/triggers.js

@@ -1,6 +1,6 @@
 // triggers.js
 import Parse from 'parse/node';
-import cache  from './cache';
+import AppCache  from './cache';
 
 export const Types = {
   beforeSave: 'beforeSave',