Merge pull request #1 from zeehio/patch-1

Prevent database is locked errors

httpd.js

@@ -7,7 +7,7 @@ var moment = require('moment');
 var express = require("express");
 
 var app = express();
-var db = new sqlite3.Database(DB_FILE);
+var db = new sqlite3.Database(DB_FILE, sqlite3.OPEN_READONLY));
 
 var isValidChart = function(s) {
     return /^(net_in|net_out|block_in|block_out|mem)$/.test(s);

stats.js

@@ -120,6 +120,8 @@ var main = function() {
     writeStats(containers);
 };
 
+db.run("PRAGMA journal_mode=WAL");
+
 db.run("CREATE TABLE IF NOT EXISTS containers ( " +
     "id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, " +
     "name TEXT NOT NULL)");