vn.py quick start 6 - develop the first quantitative strategy

The quick start series has reached Chapter 6, and we are finally going to touch the content of programming practice. The content in this tutorial assumes that you have a certain basic grasp of Python language development:   Understand Python data results Understand the concept of object-oriented programming Can use control statements t ...

Posted by hairulazami on Tue, 08 Mar 2022 11:01:22 +0100

Nginx basic introduction + cross domain solution

Author: Jingteng source: Hang Seng LIGHT cloud community Introduction to Nginx Nginx is a high-performance http server / reverse proxy server and e-mail (IMAP/POP3) proxy server developed by Igor Sysoev, a Russian programmer. Its main functions include: Reverse proxy load balancing HTTP server At present, most of the running Ngi ...

Posted by Bobulous on Wed, 02 Mar 2022 08:37:34 +0100

WebP, Taobao are using image optimization methods

What is WebP?WebP is a picture file format that provides both lossy compression and lossless compression. The size of the picture can be greatly compressed, and the quality of the picture is the same as png, jpeg, etc. The lossless compression of WebP is on average 45% smaller than png format files.Here are the test results of comparing the siz ...

Posted by rami on Sat, 11 Dec 2021 10:22:46 +0100