Security engineering is the discipline of building secure systems. Its lessons are not just applicable to computer security. In fact, in this repo, I aim to document a process for securing anything, whether it’s a medieval castle, an art museum, or a computer network

It’s Twitter thread so a bit hard to read but worth it. The cause is due to an AWS IAM policy s3:GetObject to * resource. IAM is trial and error, you run your app, see if it works and need what permission and grant it. Sometime you feel frustrated and just quickly do a * and there we go. $80 million fine. What can we do about it? This thread give some tips and guide line to improve security when working with IAM. Some tools such as police sentry to review IAM, or Netflix’s repokid to automatically revoking unused IAM permission.

quay.io is a docker registry and went down on May 19th. The root cause is a storm of tens of thousands of database connection that locking MySQL instance. Reading these post motern help level up your debugging skill because it’s the hard lesson from these teams.

This link is a PDF on dropbox so it can be a bit hard to read online or on mobile. It outlines how facebook leverage the end-to-end networking infrastructure to prevent or mask any disruptions in face of releases.

This project won first place in JS1024. It made use of Web Audio API to make a piano all in 1024 bytes. We will go over every single line of code together with tips and tricks to achieve that.

It’s very important to get this right now in Node 14. here are now two kinds of scripts: there are old-style CommonJS (CJS) scripts and new-style ESM scripts (aka MJS). CJS scripts use require() and exports; ESM scripts use import and export. ESM and CJS are completely different animals.

Imagine assigning some value to a variable, reading it back immediately after, and finding out that somehow the write had no effect at all - madness! Whether an update becomes visible sooner rather than later depends on the guarantees offered by the database.

Title says it all. COVID-19 increase demand for video chat system. And video streaming require bandwidth and cpu/gpu to decode data from camera stream.

Compare two tables in great way to verify something like ETL job, backup, replication. The normal method is table1 - table2 union table2 - table1 but that fetch each tables 2 times? How can we do that with a single fetch per table?

Have feel frustrated because you have a SSH session that disconnect/timeout somehow when returning to your laptop? Most of the time I ended up just close my terminal. But it has a way to do that properly. Basically, to force terminate a frozen SSH session, press ~ then .. Note that when press ~ nothing will show up on terminal though.