Mozilla Firefox Developer Edition 43 and other modern browsers help websites to control third-party JavaScript loads and prevent unexpected or malicious modifications. Using a new specification called Subresource Integrity, a website can include JavaScript that will stop working if it has been modified. With this technology, developers can benefit from the performance gains of using Content Delivery Networks (CDNs) without having to fear that a third-party compromise can harm their website.
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Deep dive into postgres stats: pg_stat_database
In this post we continue our discussion about postgres stats. This time we’ll be focusing on pg_stat_database. As mentioned in postgres documentation, this view contains one row for each database in the cluster, showing database-wide statistics. It is well known that postgres may have several databases within single instance, hence this view contains stats about all of them.
You can find full description of view’s columns in the official documentation so here I will focus on types of problems that it helps us to solve:
- Cache hit ratio.
- Commit ratio.
- Database anomalies.
- Load distribution.
WebPageTest: Test a website’s performance
Run a free website speed test from multiple locations around the globe using real browsers (IE and Chrome) and at real consumer connection speeds. You can run simple tests or perform advanced testing including multi-step transactions, video capture, content blocking and much more. Your results will provide rich diagnostic information including resource loading waterfall charts, Page Speed optimization checks and suggestions for improvements.
Million requests per second with Python
Japronto is a brand new micro-framework tailored for your micro-services needs. It’s main goals include being fast, scalable and lightweight. It lets you do synchronous and asynchronous programming with asyncio and it’s shamelessly fast. Even faster than NodeJS and Go.
.. These results were obtained on AWS c4.2xlarge instance that has 8 VCPUs launched in São Paulo region with default shared tenancy