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: Open Source
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 …
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…
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, …
Shadowsocks One-Click Install Script
Script Requirements:
Supported OS: CentOS, Debian, Ubuntu
Memory: ≥128M
Date: March 09, 2015
About This Script: A one-click installer for the latest Go version of Shadowsocks 1.1.3. The Go version supposedly has a buff, but I haven’t noticed it. Unlike the Python version …
FlashFXP 4.4 Registration Code + Crack Patch + Official Original – Clean Perfect Activation
Everyone knows FlashFXP — no need for much introduction. It’s a truly excellent FTP client. While similar software like CuteFTP and FileZilla exist (I won’t compare features for now), its clean and elegant interface alone makes it a favorite. FlashFXP updates at a genuinely fast pace — it might get updated twice in a single month …