How to Elegantly Write a Mesos Framework
A guide to writing a Mesos Framework elegantly, covering framework architecture, scheduler implementation, and executor design patterns.
Category: Articles
A Simple Comparison of Four Major Java EE Containers (Tomcat, JBoss, Resin, Glassfish)
There are many popular Java EE containers today: Tomcat, JBoss, Resin, Glassfish, and more. Below is a simple comparison of these four Java EE containers. 1. Tomcat is a Java Web application server strongly supported by Apache. Thanks to its excellent stability and extensive documentation, it is widely …
Yunsuo Common Issues Summary
1. Fix for Website Loading Errors with “security_verify_data=313932xxx” in the URL Below is the Yunsuo 3 settings interface: Log in to Yunsuo: On the main screen, find Anti-CC Attack: As shown above, change the original CC protection level from Medium to Low (or uncheck Enable Browser Behavior Authentication), then reopen the website …
100M Telecom Fiber vs. 20M Enterprise Dedicated Line Comparison
Test Environment: 100Mbps Telecom Fiber, 20Mbps Enterprise Dedicated Line
Platform: Windows 7
Router: H3C Enterprise Router (specific model)
Testing Software: China Telecom Official Broadband Assistant 9.3
Below is the speed for the 20Mbps enterprise dedicated line (click image to enlarge):
Below is the speed for the 100Mbps standard fiber:
Notes: …
About Dedicated Fiber Optics and Regular Fiber Optics
In fact, regular fiber optics are not much different from the old ADSL telephone line broadband — except they are more stable and can support higher speeds. However, this so-called fiber has asymmetric upload and download speeds; downloads feel fast but uploading things is terrible. This is also why some people feel lag when playing online games while running apps like Kugou Music…
ClamAV Installation Guide
ClamAV Antivirus is the most popular antivirus software on the Linux platform. ClamAV is a free and open-source product that supports multiple platforms, such as Linux/Unix, MAC OS X, Windows, and OpenVMS. 1. Installation and Configuration useradd clamav #Add user wget http://mirror.cn …
A Case of Failing Static Generation After Modifying Discuz Templates: <!–{eval output();}–>
Some time ago, while modifying a Discuz template, I removed a block of code from the footer.html file, which caused the site’s static page generation to break:
The fix is simply to add the relevant code back in, though I still have no idea what exactly that code does. …
Differences Between OpenVZ, Xen, and KVM Server Architectures
1. OpenVZ Architecture Servers
OpenVZ is an operating-system-level virtualization technology based on the Linux kernel and operating system. OpenVZ allows a physical server to run multiple operating systems, known as Virtual Private Servers (VPS) or Virtual Environments (VE). …
How to Fix Discuz X Avatar Upload Error (Error Code:0)
This issue is caused by incorrect folder permissions. The problem is that the /uc_server/data/ directory cannot be changed to 777 permissions, and can only be resolved using the method below.
Additionally, the following method is applicable to any version of Discuz X and Discuz!
Solution:
Set /uc_server/data/ folder permissions to 777 …
Besttrace: A Graphical Trace Route Tool
ipip.net is an IP lookup website whose database is an IP library derived from BGP/ASN data analysis and processing. It is highly accurate and beloved by network enthusiasts. Its client, besttrace (formerly 17MONIPDB), is also very easy to use, and the trace function even comes with a map, making it clear at a glance and extremely convenient. IP, response time, …