Restoring Mongo Data Using the Oplog

Everyone who works with data worries about accidental deletion and should have a good understanding of recovery strategies, ideally before an incident occurs. If you’re using Mongo, you can restore data to an arbitrary point in time using the oplog, provided you are using replication and have a recent backup.

This blog post will walk you through a simple data deletion and recovery scenario using this method, and should be accessible even if you have limited experience with Mongo.


Hosting a remote Global Day of Coderetreat

Back in September 2019 we decided to host a Global Day of Coderetreat event. Since we’re a remote first digital education company, this event would also be conducted remotely. The event would be globally available and would include people inside and outside of TES. A few questions you may have πŸ€·πŸ½β€β™€οΈ What is a Coderetreat? Originated at the Codemash Conference in January 2009 by Gary Bernhardt, Patrick Welsh, Nayan Hajratwala and Corey Haines.


Tech Standards: Superagent

At Tes, we use superagent as our standard request library.

Three years ago, a review of our codebase showed that we had six different request libraries in use on the client side across our different services: superagent, isomorphic-fetch, browser-request, whatwg-fetch, reqwest, and axios.

Engineers had a discussion to try to find a single library to meet all our needs.


The Art of Pull Requests

I joined TES 3 months ago and in that time have been reflecting on some things I have learnt - raising good PRs is one of them. My prior experience is using trunk based development, where everyone on the team commits to the master branch. I work in the Security Engineering team now and we use PRs a lot, which was new for me. One of our responsibilities in the team is to look after the AAA services.


Contributing to Open Source is easier than you think

At Tes we have a weekly knowledge sharing session. As part of this, Rouan recently shared some tips for how to get started with contributing to open source projects. Turns out, it’s easier than you might have thought. Even better, you can probably do it as part of your daily work! In his presentation Rouan also explores reasons for contributing to open source and gives examples for how he got started.