We host Ecommerce stores on our EC2 instances. A lot of times we need to make modifications to our servers. Logging in to each instance and doing operations is tedious. Imagin having to login to 20+ servers and changing into directories and running same commands over and over. Tedious right…

UAT server was down with 502. We logged into the server and saw nginx was dead. Upon trying to restart, it would say nginx: [emerg] open() “log/access.log” failed (28: No space left on device) Naturally you check if the disk space is full and you run following command df -lh As you can see /mnt1 has 29% diskspace. Then what is the problem? Then we check if OS ran out of i-nodes df -ih

We use AWS cloud to host ecommerce stores that scale with traffic. Problem statement Recently we noticed that we had high traffic on our servers and servers were Autoscaling to match the traffic. Upon inspection we found, traffic was from GoogleBot. We looked at the URL’s and realized, GoogleBot was…

You buy a Megamenu extension from the Marketplace. The extension works perfectly fine on the local system. You now put this extension on the staging and content team starts making changes. They flush cache several times and they report that their changes are not reflecting. What’s wrong? You have tested…

Magento has concept of applications and application areas. As of now, you can find 5 applications in Magento 2 and hence 5 different entry points to codebase. HTTP application ( \Magento\Framework\App\Http ) Entry point for end users. Found in pub/index.php Media Storage application ( \Magento\MediaStorage\App\Media ) (pub/get.php) This serves images…

Performance is measured on my 8 core 20GB RAM machine. When measuring I’m using 6x CPU throttle and slow 3G. In network tab check “Disable cache”. Enable https and http2 on local using devcert. My nginx conf looks like following server { listen 80…

There are currently 4 ways to deliver javascript in Magento 2. Don’t bundle or merge at all. Use built-in bundling. Merge javascripts. Use a tool like Baler, Magepack, Or do it yourself by following this Should you even care about how javascript is being delivered? Well, if LCP of your…

Lets say your php script takes a lot of time to process but nginx closes the connection and you see a 502 screen. What happens to your php execution? Here, we want to understand php processes shutdown behavior. In this context, exploring register_shutdown_function behavior is relevant. We will explore 6…

Of course you gotta have PHPSTORM. Install nginx,php-fpm and composer, nodejs all projects go in /var/www directory nginx conf file name for domain names used on local should have pattern example.to.conf https://www.npmjs.com/package/maildev Setup maildev for local email testing. bashrc contains code to show me current git branch I’m working on …