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PONode/Mongo application crashes on Amazon EC2 and cannot access the server
 

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    <p>I have a node app with mongo server on an amazon ec2 instance. It works great, but I just added a new API call and every time I call it, the server freezes and I cannot access/ssh into it for several hours. While this is happening, my server goes down which makes the app that relies on it unusable and my users angry...</p> <p><b>This code works perfectly on my localhost</b>, but as soon as I run it on my server it freezes. My thoughts are that it may be crashing mongo? I have no idea why this would happen...</p> <p>If anyone has any ideas what could be going wrong, please let me know.</p> <p>node is using express. The send_error function will perform a res.send({some error}). db.CommentModel returns mongoose.model('comment', Comment);</p> <p>in app.js</p> <pre><code>app.get('/puzzle/comment/:id', auth.restrict, puzzle.getComments); </code></pre> <p>in the file which defines getComments</p> <pre><code>exports.getComments = function(req, res) { var userID = _u.stripNonAlphaNum(req.params.id); var CommentModel = db.CommentModel; CommentModel.find({user: userID}, function(e, comments) { if(e) { err.send_error(err.DB_ERROR, res); } else if (!comments) { err.send_error(err.DB_ERROR, res); } else if (comments.length == 0) { res.send([]); } else { var commentIDs = []; for (var i = 0; i&lt;comments.length; i++) { commentIDs.push({_id: comments[i].puzzle}); } var TargetModel = pApp.findPuzzleModel(_u.stripNonAlphaNum(req.apiKey)); TargetModel.find({removed: false, $or: commentIDs}, function(e, puzzles) { if(e) { err.send_error(err.DB_ERROR, res); } else if (!puzzles) { err.send_error(err.DB_ERROR, res); } else { res.send(puzzles); } }); } }); } </code></pre>
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