Articles in oplog

Meteor 1.4, MongoDB and Compose - Ready to Oplog

With a switch to newer MongoDB drivers and other low level improvements, the new Meteor 1.4 works much better with Compose's MongoDB. That means that we now recommend that users migrate to Meteor 1.4 to get the best performance and reliability with t…

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Connecting to the Oplog on the new MongoDB

In our previous article on the new MongoDB at Compose, we looked at connecting to the new MongoDB deployments and picked out what has changed compared to the previous MongoDB Classic. If you are considering using the new MongoDB with Meteor, please r…

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Compose's new MongoDB and what you need to know

The release of our new MongoDB deployments has brought a lot of new questions about what you need to know and why and what has changed - everything from SSL, WiredTiger, Oplogs and Importing. So we're going to answer as many of those here. How can I…

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Oplog: Tools & Libraries for All

As the final post in this short series on the oplog and what your applications can do with it now that MongoHQ's Elastic Deployments give you access to it, we'll look at the libraries (in various languages) and tools that use the oplog. Although the…

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Meteor, the Oplog & Elastic Deployments

In the previous two posts in this series we looked at what the oplog is and how you can access it elegantly. However, to get a complete idea of what is possible with the oplog, we are going to look at the Meteor framework and how they've used the opl…

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Node.js & Mongo-Oplog: Elegant Oplog Consumption

In the first part of this series, we showed you what was in the oplog and some raw code that you could use to access it. That raw code was not the prettiest of things though, and starting in this post we'll look at the Mongo-Oplog library for Node.js…

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The MongoDB Oplog & Node.js

Imagine if there was a record of every written change made in MongoDB stored as a collection. Imagine the opportunities that this would offer: triggering events, specialized backups, cache population, and more. Well, stop imagining as that's exactly…

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Elastic Deployments, Now with Oplog Access

We've just released a feature that allows all customers on our Elastic Deployments to enable oplog access directly through our dashboard. Simply add a new a user to the desired database, tick the oplogAccess option, and drink from your database's fir…

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There's Always Money in the <del>Banana Stand</del> MongoDB Oplog

... make sure you don't burn it down. Anyone who's ever done much work with databases has experienced the "oh shit" moment where data goes missing, or appears corrupt, and there's really no obvious reason why. We, as a company, are morally opposed to…

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