Amazon Simple Queue Service (Amazon SQS) is a scalable and fully managed message queuing service that allows users to transmit any amount of data through the web without administrative responsibility. Recently, I tried to evaluate whenever the SQS service will fit my needs for a design I'm working on. My interest was getting information regarding … Continue reading SQS Benchmark (with large messages)
In the previous blog post, I've described how to build a simple SMS notification system using DynamoDB, SNS and AWS Lambda. In this post, I'll show how to change it in order to allow each user to choose whenever he wants to get SMS notification, Email notification or nothing at all. First of all we … Continue reading Serverless On-call duty notifier – Part 2
As many engineers in the industry, we have on-call duty. The on-call duty is defined at the beginning of each month and the list of the on-call engineers for each date can be found in an excel sheet. Well, this is nice but I want to get notified when I'm on-call 🙂 I've created a … Continue reading Serverless On-call duty notifier – Part 1
One of the jobs in our CI pipeline is responsible for compiling, building and packing the code. The artifacts of the job is a directory on our storage with the build number and all the artifacts that are related to this build number. For example: //storage/build_1000, //storage/build_1001 and etc. There are other jobs that are … Continue reading Getting the right Jenkins build number using Python
Recently I found a funny bug in our code and I wanted to share some insights on it so you won't do the same mistakes. Let's assume we have a function that produces a lot of output and it can run from multiple threads. I wrote a simple program to demonstrate it: The sharpest eyes … Continue reading Proper use of static keyword
As part of my day job, I write and compile a lot of code. My laptop is not that strong and I find myself wasting a lot of time on compilation. Then I asked myself, why shouldn't I use the cloud for getting more compute power ? Choosing cloud provider and instance type My best … Continue reading How do I spend less time on compilation
Today Microsoft Azure introduced the new F-series VM sizes (you can read about it here) and our software faced a bizarre issue. When we want to create a new instance in Azure, we have an implementation that chooses VM size based on some criteria. One of the criteria is the number of data disks we … Continue reading Why you shouldn’t trust the documentation ?