A jpeg parser, running on a surveillance camera, which crashed every time the company’s CEO came into the room. Read to know why :-).

We know that it’s in your .git directory, but where exactly in there are all the versions of your old files?

Sometimes our Internet connection seems weird, and we don’t understand why. We know something is wrong, but we cannot really pinpoint the issue. And other times, there is weird file access that goes undetected simply because we don’t know what to look for. Logs won’t be helpful in those case because they might be logged. Lets’ look at the tool that help us identity and analyze network traffic.

Microsoft has played an outsized role in the development and importance of quality assurance across the industry. Microsoft was the first major company to come up with a specialized testing role which went well beyond manual testing.

Open up the browser’s network tab and you’ll see a lot of activity. Assets are being downloaded, information’s being submitted, events are being logged, and more. How can we priority more important request, and dedicated more browser(end-user) bandwidth to these.

How do we track changes to a database and react to it? Such as sending an email when a new customer are added to the table out of bound?

There is more to SQL joins than you might think. Let’s explore them a bit. I confess that I didn’t know about lateral join

While I’m a big fan of Postgres, I have used MongoDB extensively too and their replicaset is amazing. All the failover and done automatically, with built-in client auto-retry and auto discover help the whole setup. With Postgres, we still have a lot of work to do to get there, but thing are improving in Postgres 16.

No matter your stack is, at some point, NodeJS will enter the table. Knowing how to operate them securely is super useful.

To handle the tremendous growth of PayPal’s streaming data since its introduction, Kafka needed to scale seamlessly while ensuring high availability, fault tolerance, and optimal performance. In this blog post, we will provide a high-level overview of Kafka and discuss the steps taken to achieve high performance at scale while managing operational overhead, and our key learnings and takeaways.