July 2019 - Page 59 of 69

What is Caching? — step-by-step DevOps tutorial on Progressive Robot

What is Caching?

Caching refers to the process by which server responses are stored and reused to make subsequent requests faster. DNS, databases, and web servers frequently use caching to increase speed and reduce load on servers and networks.

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FreeBSD 12 — libsoup — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libsoup — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libsoup — stack based buffer overflow Related CVEs: CVE-2011-2054 CVE-2017-2885 Upstream summary: Tobias Mueller reports: libsoup is susceptible to a stack based buffer overflow attack when using chunked encoding. Regardless […]

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How to Install and Use Podman Pods on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Use Podman Pods on RHEL 8

Podman pods allow you to run multiple containers that share the same network namespace, mirroring the Kubernetes pod model without requiring a container orchestrator. On RHEL 8, Podman is available in the default AppStream repositories and provides native rootless pod support out of the box. This tutorial covers creating and managing pods, running multi-container workloads […]

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如何在Python 3中使用注释 — step-by-step Python tutorial on Progressive Robot

如何在Python 3中使用注释

“注释”是存在于电脑代码中的”被编译器和解释器忽略”的那些文本行。在程序中使用注释将使得代码更易读(方便人去理解代码),因为注释能提供有用的信息去解释代码的每一部分是做什么的。 取决于在程序中的不同目的,你的注释可以是给自己的标记和提醒,或者是帮助其它程序员去理解你的代码。 总的来说,当你写程序或修改程序的过程中,当时写下的注释最为有用。而之后补上的注释长远看来将会没那么有用,因为一段时间之后,你会很容易忘记之前的想法。

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FreeBSD 12 — subversion-static — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — subversion-static — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: subversion — Arbitrary code execution vulnerability Upstream summary: subversion team reports: A Subversion client sometimes connects to URLs provided by the repository. This happens in two primary cases: during 'checkout', […]

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How to Use Docker Secrets and Environment Variables Securely on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Use Docker Secrets and Environment Variables Securely on RHEL 9

Secrets and environment variables in Docker containers require careful handling to avoid leaking credentials into image layers, container logs, or environment variable dumps. The most common mistakes are: hardcoding credentials in Dockerfiles (they persist in image layer history forever), passing secrets via –env or –env-file flags (visible in docker inspect output and the process environment), […]

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How to Benchmark the Performance of a Redis Server on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How to Benchmark the Performance of a Redis Server on Ubuntu 18.04

Benchmarking is an important practice to analyse the overall performance of servers and identify bottlenecks as well as opportunities for improvement within those systems. In this guide, we’ll demonstrate how to benchmark the performance of a Redis server running on Ubuntu 18.04, using a few different tools and methods.

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Выполнение математических операций в Go с помощью операторов — step-by-step Programming tutorial on Progressive Robot

Выполнение математических операций в Go с помощью операторов

Числа используются повсюду в программировании. Они используются для представления таких вещей, как размеры экрана, географическое местоположение, денежные средства и баллы, количество времени, передаваемого в видео, расположение игровых аватаров, отображение цветов через…

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