diff --git a/bin/start-server.js b/bin/start-server.js
index 61eb47e..eb040d1 100755
--- a/bin/start-server.js
+++ b/bin/start-server.js
@@ -10,6 +10,8 @@ var parseArgs = require('minimist'),
     defaultRootDirectory = process.cwd(),
     isMain = !module.parent,
     baseURL = "file://" + path.resolve(path.join(__dirname, ".."));
+const util = require('util');
+const winston = require('winston');
 
 if (isMain) {
   var args = parseArgs(process.argv.slice(2));
@@ -29,6 +31,8 @@ if (isMain) {
 
 
 function setupSystem() {
+  setupLogger();
+
   var livelySystem = lively.modules.getSystem("lively-for-auth-server", {baseURL});
   lively.modules.changeSystem(livelySystem, true);
   var registry = livelySystem["__lively.modules__packageRegistry"] = new lvm.PackageRegistry(livelySystem);
@@ -40,3 +44,19 @@ function setupSystem() {
     registry.devPackageDirs = process.env.FLATN_DEV_PACKAGE_DIRS.split(":").map(ea => lively.resources.resource(`file://${ea}`));
   return registry.update();
 }
+
+function formatArgs(args){
+  return [util.format.apply(util.format, Array.prototype.slice.call(args))];
+}
+
+function setupLogger() {
+  let logger = new winston.Logger();
+  logger.add(winston.transports.Console, {colorize: true, timestamp: true});
+  console.livelyLogger = logger;
+  console.log = function() { logger.info.apply(logger, formatArgs(arguments)); };
+  console.info = function() { logger.info.apply(logger, formatArgs(arguments)); };
+  console.warn = function() { logger.warn.apply(logger, formatArgs(arguments)); };
+  console.error = function() { logger.error.apply(logger, formatArgs(arguments)); };
+  console.debug = function() { logger.debug.apply(logger, formatArgs(arguments)); };
+  return logger;
+}
diff --git a/package.json b/package.json
index f6ad43b..68d3460 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,8 @@
     "minimist": "^0.0.8",
     "lively.modules": "^0.8.18",
     "lively.storage": "*",
-    "systemjs": "^0.19"
+    "systemjs": "^0.19",
+    "winston": "^2.3.1"
   },
   "devDependencies": {
     "babel-core": "^6.16.0",
diff --git a/server/http-handler.js b/server/http-handler.js
index b94a17e..fa37502 100644
--- a/server/http-handler.js
+++ b/server/http-handler.js
@@ -121,10 +121,25 @@ let routes = [
           user = await userDB.getUserNamed(decoded.name);
       if (!user) return fail(`no user ${data.name}`);
 
-      try { user.modify(data.changes); }
-      catch (err) { return fail(`User change failure: `, err.message, true); }
+      try {
+        user.modify(data.changes);
+      } catch (err) {
+        return fail(`User change failure: `, err.message, true);
+      }
+      user.storeIntoDB(userDB);
+
+      success({status: 'modification successful', token: user.token});
+    }
+  },
+
+  {
+    path: "/clear-cache",
+    methods: ["POST"],
+    handle: async (server, req, res, next, success, fail) => {
+      let userDB = UserDB.ensureDB(server.options.userdb, {});
+      userDB.clearCache();
 
-      success({status: "modification successful", token: user.token});
+      success({status: 'cache cleared'});
     }
   }
 
diff --git a/server/user-db.js b/server/user-db.js
index 8564f71..bfaacf6 100644
--- a/server/user-db.js
+++ b/server/user-db.js
@@ -49,7 +49,11 @@ export default class UserDB {
     this.userCache.set(user.name, user);
     return user;
   }
-  
+
+  clearCache() {
+    this.userCache = new Map();
+  }
+
   destroy() {
     this.constructor.cached.delete(this.path);
     return this.db.destroy();