Linux

How To Implement PHP Rate Limiting with Redis on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Implement PHP Rate Limiting with Redis on Ubuntu 20.04

Redis (Remote Dictionary Server ) is an in-memory open source software. It is a data-structure store that uses a server’s RAM, which is several times faster than even the fastest Solid State Drive (SSD). This makes Redis highly responsive, and therefore, suitable for rate limiting. In this tutorial, you’ll implement a PHP script for rate limiting with Redis on an Ubuntu 20.04 server.

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Gentoo Linux — app-admin/vault — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-admin/vault — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202207-01 Related CVEs: CVE-2020-25594 CVE-2021-27668 CVE-2021-3024 CVE-2021-3282 CVE-2021-32923 CVE-2021-37219 CVE-2021-38553 CVE-2021-38554  +5 more Upstream summary: Multiple vulnerabilities have been discovered in HashiCorp Vault. Please review the CVE identifiers referenced below for details. […]

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Oracle Linux 8 — ruby:3.1 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ruby:3.1 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2024-1431)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-1431 Related CVEs: CVE-2023-28756 CVE-2023-28755 CVE-2021-33621 CVE-2023-36617 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Common Problems 119150

Ubuntu 14.04 LTS Redis service refuses connections due to overcommit settings

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: 14.04 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs […]

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Gentoo Linux — net-libs/tox — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-libs/tox — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202403-01 Related CVEs: CVE-2021-44847 Upstream summary: A vulnerability has been discovered in btrbk. Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 116138

Ubuntu 26.04 LTS – cron jobs skip execution due to wrong timezone and PATH – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Arch Linux — powerdns — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — powerdns — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201903-13 Related CVEs: CVE-2019-3871 CVE-2018-1046 CVE-2021-36754 CVE-2018-14626 CVE-2018-10851 CVE-2016-7074 CVE-2016-7073 CVE-2016-7072  +3 more Upstream summary: Type: insufficient validation. Status: Fixed. Affected: 4.1.6-2. Fixed in: 4.1.7-1. Group: AVG-927. Table of contents […]

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Common Problems 115408

RHEL 7 Legacy service Script Returns status dead

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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Arch Linux — erlang — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — erlang — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202101-39 Related CVEs: CVE-2020-35733 Upstream summary: Type: certificate verification bypass. Status: Fixed. Affected: 23.2-3. Fixed in: 23.2.2-1. Group: AVG-1457. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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