High-Concurrency Nginx Tuning on Ubuntu: My Practice
This post shares my personal high-concurrency Nginx configuration on a 2-core 2 GB Ubuntu box. Other Linux systems may differ — take it as reference only.
TagAll posts
#Linux
13 posts
More Posts
Page 1 of 2Cron Expression Tutorial: Covering Linux, Spring and Quartz Scheduled Tasks
What's a cron expression? If you're reading this, you probably already know what it's for: when setting up scheduled tasks on Linux, Spring or Quartz, you write a cron expression to define the execution cycle. Cron is pronounced /krɒn/ — like 'chron' in chronology.
Chinese-Made UOS Server OS V20 Now Available With a Free License
At the UOS Ecosystem Conference on December 20, Liu Wenhuan, General Manager of UnionTech Software Technology Co., Ltd., formally announced the company's new 2023 strategy and released a free usage license for the UOS V20 server operating system.
Linux File Permissions: What chmod 644, 755, and 777 Mean and How to Use Them
We're always setting permissions on folders and files in Linux with chmod 777. Those 777 digits are the permissions — just three numbers expressing three kinds of permission for three kinds of role. Let's break them down one by one.
Debian HTML Sanitizing Library Found Vulnerable to Cross-Site Scripting — Upgrade Now
On April 6, Debian published a security update fixing a cross-site scripting vulnerability found in the Python HTML sanitizing library bleach. python-bleach is an allowlist-based Python library that sanitizes HTML text by escaping or stripping tags and attributes.
The sudo Vulnerability (CVE-2021-3156) on Linux, Unix and macOS: Reproducing the Exploit
This is a decade-old vulnerability in the sudo tool that can grant any local user root access on Unix-based systems, including macOS Big Sur and earlier. Improper operation grants root privileges to arbitrary local users. To trigger it, a user only needs to rewrite argv[0] or create a symbolic link.
CentOS 8 Support Ends in 2021 — There May Be No More Free RHEL
CentOS 8 support ends in 2021. CentOS 7, as the long-term support release, will continue to be supported until its own lifecycle ends, and CentOS Stream becomes the focus. At the end of 2021 CentOS 8 stops being maintained, while CentOS 7 stays supported until 2024.
Linus Torvalds Announces the Release of Linux Kernel 5.7
Linus Torvalds announced the release of Linux 5.7 on the kernel mailing list. In his release announcement he commented: "So last week we were fairly calm, with no screams of 'let's drag out one more rc'. Fingers crossed — hopefully we won't have another situation like in 5.6, where a wifi regression landed at the last minute."
A Huawei L20 Security Expert Submitted a Patch to the Linux Kernel and a Vulnerability Was Found; Huawei Says It's Unrelated to the Company
According to foreign media ZDNet, a Huawei L20 chief security expert published a Linux kernel hardening patch called HKSP on GitHub. Interestingly, the patch was quickly found by the development team grsecurity to have an "easily exploitable" vulnerability, immediately sparking heated discussion.
Dash For Mac OS X 5.1.0 [TNT]
Dash is an API documentation browser and code snippet manager. Dash helps you store snippets of code, and instantly search and browse docs for almost any API you might use.
