add PRAGMA journal_mode=WAL;

services/clsi/app/coffee/db.coffee

@@ -14,6 +14,8 @@ sequelize = new Sequelize(
 	options
 )
 
+sequelize.query("PRAGMA journal_mode=WAL;")
+
 module.exports =
 	UrlCache: sequelize.define("UrlCache", {
 		url: Sequelize.STRING