All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
| // | |
| // Regular Expression for URL validation | |
| // | |
| // Author: Diego Perini | |
| // Created: 2010/12/05 | |
| // Updated: 2018/09/12 | |
| // License: MIT | |
| // | |
| // Copyright (c) 2010-2018 Diego Perini (http://www.iport.it) | |
| // |
Big Idea: Piece Table encoded as a Splay tree for large file edits
A splay tree is useful because it provides efficient lookup for workloads with high locality.
Demonstrates the tradeoffs of representing edits as a list v. as a splay tree
Below is the list of modern JS frameworks and almost frameworks – React, Vue, Angular, Ember and others.
All files were downloaded from https://cdnjs.com and named accordingly.
Output from ls command is stripped out (irrelevant stuff)
$ ls -lhS
566K Jan 4 22:03 angular2.min.js
Redis is Database whereas RabbitMQ was designed as a message router or message-orientated-middleware (mom), so I'm sure if you look for benchmarks, you'll find that RabbitMQ will outperform Redis when it comes to message routing.
RabbitMQ is written in Erlang which was specifically designed by the telecom industry to route messages, you get clustering out of the box due to it being written in Erlang which means in a clustered environment, RabbitMQ will outperform Redis even further.
Furthermore, you get guaranteed delivery of messages due to the AMQP protocol, in other words, if the network drops while consuming the message, the consumer won't be able to say thanks for the message, so the consumer will drop the message and Rabbit will requeue the message, if you publish a message and the queue didn't say thanks to the publisher due to network problems or timeouts, Rabbit will drop the message and the publisher will keep on trying to publish the message. You can have publish retries with backoff policies, so
In general, the http referrer policy is about reducing the information that the referrer contains. The policy roughly translates to "you are now on this site (host) and you came from a certain site (referrer)"
Suppose you're on your user profile page on - site.com/user=id:1223122. If you navigate elsewhere (to a different url), the browser will report the url that you came from.
If no referrer policy is set, url paths can unintentionally reveal user information!
It's a good practice for information security to set a referrer policy header.
Suppose we set strict-origin-when-cross-origin policy - what does that mean?
npx installed using npm install -g npx.