Over the past few days, while participating in design reviews for the Help Center, I鈥檝e run into some questions: What exactly is the purpose of a Help Center? What should a Help Center help users with? When the Help Center starts getting heavy traffic, should we find ways to fully leverage it? Should a Help Center include a UGC module? This blog post records my thoughts on help …
Over the past 30 years, the hard drive has been the workhorse of storage, and no one would doubt its critical role in a computer. Hard drives typically store users’ most important information, and given our heavy reliance on them, people invariably share a common concern: How long does a hard drive actually last? …
The bittersweet journey of a newbie RHCE. Many people want to earn their RHCE certification — let me share how I became one.
1 Love at First Touch
I first encountered Linux in November 2003. Back then I thought it was quite mysterious, because I’d heard it was on the same level as Unix…
The world of Linux is truly fascinating — if you haven’t gotten started yet, dive right in! Operating Systems: CentOS※, FreeBSD, Ubuntu, Red Hat Linux, SUSE Linux
Web Services: Apache※, Nginx※, Lighttpd, PHP※, Tomcat※, Resin※
Databases: MySQL※, PostgreSQL, MySQL-pr …
In certain network environments, even when the VPN connection shows as successful, you may still be unable to access some foreign websites or certain specific sites. Is it an issue with the VPN server, or its geographical location? Usually at this point users are quite frustrated, having paid for the service …
1 What Is Web Testing? Since web applications directly interact with users and often must endure prolonged, heavy usage, both the functionality and performance of a web project must undergo reliable verification. This necessitates comprehensive testing of the web project. Web application testing differs from other types of application testing …
If multiple IP addresses are configured on a single network interface, which one is used for outgoing packets? On Linux, the iproute2 tool lets you force the source address with the src parameter: ip route add 1.2.3.4/32 via 4.3.2.1 src 3.3.3.3 But on Windows, everything is internal …
Each feature requires an IOS upgrade, which has created significant confusion for customers when choosing among various IOS versions. Now, Cisco has adopted a feature-packaging strategy for version 12.3 (routers) or version 12.2S (switches) to simplify selection: 44 features are …
A critical task for internet cafe network administrators is ensuring stable network connectivity for every computer, which requires mastering QoS configuration on the internet cafe router. To help you better understand the setup process, here is a breakdown of the key elements found in the QoS settings interface of an internet cafe router. …
Point-to-Point Protocol provides a standard method for transporting multi-protocol datagrams over point-to-point links. PPP was originally designed to provide an encapsulation protocol for IP traffic transmission between two peer nodes. In the TCP/IP protocol suite, it is a data link layer protocol used for synchronous modulation connections (OSI model …
