RA, as Shenma’s core alerting system, handles anomaly alerts for tens of thousands of service processes across Shenma Search, Recommendations, Ads, and other business lines. Its powerful features, simple user experience, and stable system performance have earned recognition from numerous application teams. It has now expanded beyond Shenma and is used across Taobao, UC, Shuqi, and many more …
On November 28, Alibaba announced it would donate its open-source distributed messaging middleware RocketMQ to the Apache Foundation, making it an Apache Incubator project. Upon successful incubation, RocketMQ is expected to become the first middleware top-level project from China at the Apache Foundation, following ActiveMQ and Kafka globally, …
The graphics card hierarchy chart allows you to view performance rankings of important graphics cards over the years. This clear, at-a-glance tiered ranking provides great help for users looking to purchase a graphics card. As you can see from the hierarchy chart, the higher up a graphics card is positioned, the more powerful its performance. For specifics, we can take a look at the chart below. (Update …
1 AMD Radeon R9 Fury Series ( 8 GB / AMD / Dual CrossFire ) 345929 points
2 AMD Radeon R9 Fury Series ( 4 GB / AMD / Quad CrossFire ) 339273 points
3 ATI Radeon R9 Fury Series ( 8 GB / ATI / Quad CrossFire ) 330344 points
4 A …
svn: E220001: Encountered Unreadable Path; Access Denied; Repository Log Cannot Be Browsed.
When attempting svn merge on the client, it always reports svn: E220001: Encountered unreadable path; access denied. This error
message: SVN encountered an unreadable path; access denied., English …
Recent news about the two certificate authorities WoSign and StartCom has once again drawn attention to online privacy and security issues. With Mozilla, Apple, and Google finalizing penalties against these two CAs, many websites using certificates issued by them are now scrambling to find new certificates …
Today’s internet is fraught with undercurrents and countless traps, and HTTPS can help you guard against some of them. However, the HTTPS ecosystem relies heavily on Certificate Authorities (CAs), which have several widely criticized issues: certificates are expensive; the system lacks transparency; and there are serious security problems, such as being compromised to issue fraudulent certificates or mistakenly issuing certificates used for man-in-the-middle …
Installation Environment: CentOS 6.4
The PHP memcache extension enables support for the memcached database caching server. Below is the installation method.
1. Download
Download URL: http://pecl.php.net/package/memcache
File Name: memcache-3.0.8.tgz
After the file is downloaded successfully, upload …
When using VMware to set up a testing environment, I needed to clone multiple virtual operating systems (I’m using CentOS 6.4), which leads to a MAC address conflict issue.
Here’s the solution:
Open Virtual Machine Settings——Network Adapter——Advanced, check the MAC address, and regenerate …
When you check out from the server using TortoiseSVN for the first time, you are prompted to enter your username and password. Below the input fields, there is an option to save the authentication information. If you select this option, you won’t need to enter your username and password each time afterward. However, if you later modify …
