Python threads are a form of parallelism that allow your program to run multiple procedures at once. Parallelism in Python can also be achieved using multiple processes, but threads are particularly well suited to speeding up applications that involve significant amounts of IO. In this tutorial, we will use ThreadPoolExecutor to make network requests expediently.
🟢 Low ⏱ 5–15 min Last verified: 25 September 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4673-1 Related CVEs: CVE-2020-26154 CVE-2020-25219 Upstream summary: Li Fei discovered that libproxy incorrectly handled certain PAC files. An attacker could possibly use this issue to cause a crash or execute […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2021:0646-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-35573 Upstream summary: srs2.c in PostSRSd before 1.10 allows remote attackers to cause a denial of service (CPU consumption) via a long timestamp tag in […]
As estruturas, ou structs, são usadas para coletar vários fragmentos de informações em uma unidade. Essas coletas de informações são usadas para descrever conceitos de nível superior, como um Address…
MySQL query profiling is a useful technique when trying to analyze the overall performance of a database driven application. When developing a mid to large size application, there tends to be hundreds of queries distributed throughout a large code base. This article will demonstrate some useful query profiling techniques using tools that are built into MySQL server.
Introduction This guide explains how to Configure GlusterFS on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege separation. […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE security advisory Related CVEs: CVE-2020-12272 Upstream summary: OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused […]
In general, Docker containers are ephemeral, running just as long as it takes for the command issued in a container to complete. By default, any data created inside the container is only available from within the container and only while the container is running.
🟢 Low ⏱ 5–15 min Last verified: 25 September 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6356-1 Related CVEs: CVE-2020-12272 CVE-2020-12460 Upstream summary: Jianjun Chen, Vern Paxson and Jian Jiang discovered that OpenDMARC incorrectly handled certain inputs. If a user or an automated system were tricked […]
In this tutorial, you will learn how to set up a FreeBSD server to remember all DNS lookups in a system-wide cache. Information will automatically expire from this cache, honoring each looked-up domain’s individual policy for rechecking.
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