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OSSpedia
4 Aug 2026 Troubleshooting high swap usage on an OpenSearch 2.9 node Knowledge BaseData Management and AnalyticsData Analytics
Infrastructure and Network 13 Jul 2026 Faraday: Rethinking Vulnerability Management for Network Security SecurityFAR
8 Jul 2026 Troubleshooting PostgreSQL performance degradation caused by monitoring queries and configuration settings Knowledge BaseData Management and AnalyticsDatabase
5 Jul 2026 Reducing nightly LWLock contention and slowdowns in PostgreSQL 15.17 with Patroni and PgBouncer Knowledge BaseData Management and AnalyticsDatabase
Infrastructure and Network 19 Jun 2026 Amnezia VPN: Self-Hosted Privacy & Secure Access Solution NetworkingAMN
Infrastructure and Network 17 Jun 2026 SeaweedFS: The Highly Scalable and Blazing Fast Distributed File System StorageSEA
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Articles
25 Jun 2026 Backups Without the Enterprise Price Tag: Using OpenZFS with Neo4j Community Edition

The Backup Problem Nobody Talks About When teams evaluate Neo4j for their graph database needs, the Community Edition looks like an obvious starting point. It’s free, powerful, and more than capable of handling serious workloads. But somewhere between the initial setup and the first production deployment, a quiet realization sets in: native backup functionality in […]

 Articles
25 May 2026 Building High Availability with NGINX: Active-Active and Active-Passive Architectures

High Availability Starts with Removing Single Points of Failure NGINX is often placed at the most important point in a web architecture. It receives traffic before it reaches applications, APIs, services, containers, or backend systems. It can act as a reverse proxy, load balancer, SSL termination layer, caching layer, and traffic control point. Because it […]

 Articles
25 May 2026 The Hidden Complexity of NGINX: When DIY Configuration Costs More Than Support

The Gap Between Getting NGINX Running and Getting It Right There is a version of NGINX that most teams encounter first: the one that installs cleanly, serves a default page, and seems straightforward enough that configuring it for production feels like a natural next step. That version is real. NGINX is genuinely well-documented, widely adopted, […]

 Articles
25 May 2026 NGINX Performance Tuning: From 3,000 to 6,000+ Requests Per Second

Why NGINX Performance Tuning Matters More Than Hardware Upgrades NGINX is trusted because it is fast, stable, lightweight, and highly flexible. It powers websites, APIs, reverse proxies, load balancers, application gateways, and high-traffic platforms across many industries. For many businesses, NGINX quietly sits at the front of critical digital services, handling traffic before it reaches […]

 Articles
25 May 2026 RediShell CVE-2025-49844: The 13-Year-Old Critical Vulnerability You Need to Patch Now

A Flaw That Was Always There, Hiding in Plain Sight There is something uniquely unsettling about a critical security vulnerability that has been sitting in a codebase for over a decade. It means that every deployment, every production environment, every cloud workload running Redis during those years was carrying a flaw that nobody knew was […]

 Articles
25 May 2026 The Kubernetes Complexity Crisis: Why 75% of Organizations Struggle with Day 2 Operations

Kubernetes Became Essential, Then It Became Hard to Manage Kubernetes has become one of the most important technologies in modern infrastructure. It gives businesses a powerful way to run containerized applications, scale services, manage workloads, and support cloud-native growth. For companies building digital products, SaaS platforms, internal applications, and data-driven systems, Kubernetes often feels like […]

 Articles
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How To
27 Jan 2026 Apache ZooKeeper Docker Migration How To
5 Sep 2025 How to Deploy Hossted VM App on Oracle How To
8 May 2025 How to Deploy Hossted VM App on GCP How To
10 Jan 2025 How to configure a domain for Hossted VM application How To
22 Oct 2024 How to authorise through AWS Identity and Access Management (IAM) How To
17 Oct 2024 How to Deploy Hossted Kubernetes App on AWS How To
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Newsflash
12 Aug 2026 DevOps
Apache ActiveMQ: Denial-of-Service Vulnerability

In Apache ActiveMQ versions before 5.19.9, a high severity vulnerability CVE-2026-59878 was detected. This vulnerability allows a remote unauthenticated attacker to cause a denial-of-service. To address this issue, users should upgrade Apache ActiveMQ to version 5.19.9 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-59878.

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12 Aug 2026 DevOps
Apache ActiveMQ: Improper Authorization Vulnerability

In Apache ActiveMQ versions before 5.19.9 a medium severity vulnerability CVE-2026-61487 was detected. This vulnerability allows an authenticated low-privilege user to bypass write permissions for message queues. To address this issue, users should upgrade Apache ActiveMQ to version 5.19.9 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-61487.

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12 Aug 2026 DevOps
Node: Prototype Pollution Vulnerability

In certain versions of Node a medium severity vulnerability CVE-2026-66922 was detected. This vulnerability allows an attacker to tamper with object prototypes, potentially leading to denial of service or other security bypasses. To address this issue, users should upgrade Node to the latest available version. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-66922.

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12 Aug 2026 DevOps
Apache Tomcat: Uncontrolled Resource Consumption Vulnerability

In Apache Tomcat versions 11.0.0-M20 through 11.0.24, 10.1.24 through 10.1.57, and 9.0.89 through 9.0.120 a high severity vulnerability CVE-2026-66299 was detected. This vulnerability allows attackers to cause uncontrolled resource consumption. To address this issue, users should upgrade Apache Tomcat to version 9.0.121 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-66299.

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12 Aug 2026 Communication and Collaboration
Mattermost: Arbitrary File Deletion Vulnerability

In Mattermost versions 11.8.0 and earlier, 11.7.3 and earlier, 11.6.5 and earlier, and 10.11.20 and earlier a medium severity vulnerability CVE-2026-7521 was detected. This vulnerability allows an administrator to delete arbitrary files on the server. To address this issue, users should upgrade Mattermost to version 10.11.21 or later. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-7521.

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12 Aug 2026 Business and Enterprise Solutions
WordPress: Authentication Bypass in SMS Alert – SMS & OTP for WooCommerce, Order Notifications & Abandoned Cart Recovery plugin

In SMS Alert – SMS & OTP for WooCommerce, Order Notifications & Abandoned Cart Recovery component for WordPress versions 3.9.7 and earlier a critical severity vulnerability CVE-2026-15014 was detected. This vulnerability allows an attacker to take over user accounts. To address this issue, users should upgrade SMS Alert – SMS & OTP for WooCommerce, Order Notifications & Abandoned Cart Recovery to the latest available version. For more details, visit https://nvd.nist.gov/vuln/detail/CVE-2026-15014.

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Case Studies
10 Aug 2026 Identifying client IPs and limiting heavy queries for Patroni PostgreSQL behind HAProxy

Problem: Production PostgreSQL clusters (PostgreSQL community edition 15.17) are running under Patroni (v3.3.2) with HAProxy (2.6.21) in front. All client connections go through HAProxy using virtual IPs and virtual ports; on the PostgreSQL side the reported client address is the HAProxy VIP rather than the originating physical client IP. The operations team needed a reliable […]

 Knowledge BaseCase StudiesData Management and AnalyticsDatabase
10 Aug 2026 PostgreSQL failover caused by connection surge and memory exhaustion on a Patroni cluster

Problem: A production PostgreSQL cluster (community PostgreSQL 15.8, managed by Patroni v2.1.4) experienced an unplanned automatic switchover. Symptoms reported included an unexpected promotion of the standby after the primary stopped responding to health checks. Monitoring and OS traces showed memory usage climbing to ~95% on the primary node, PostgreSQL failing to respond to Patroni probe […]

 Case StudiesData Management and AnalyticsDatabase
22 Jul 2026 Removing unused Hive jars from an Apache Spark image to address scanner-reported CVEs

Problem: A security scan of a deployed Apache Spark binary distribution reported two vulnerabilities located in Hive artifacts bundled with Spark: CVE-2024-29869 (org.apache.hive:hive-exec, fixed in Hive 4.0.1) and CVE-2024-23953 (org.apache.hive:hive-llap-common, fixed in Hive 4.0.1). The scan showed the vulnerable artifacts present in the shipped Spark distribution (the Spark 3.5.x line shipped a Hive 2.3.x fork […]

 Knowledge BaseCase Studies
13 Jul 2026 PostgreSQL failover: primary saturation caused promotion and WAL loss prevented automatic rejoin

Problem: A high-traffic Patroni-managed PostgreSQL cluster experienced an automatic failover: the former primary (node A) lost leadership, and a secondary (node B) was successfully promoted. However, after the failover, node A failed to automatically rejoin the cluster as a replica. The symptoms unfolded in three stages. First, direct streaming replication was immediately rejected by the […]

 Knowledge BaseCase Studies
22 Jun 2026 Automating DR site rebuild for a large Patroni PostgreSQL cluster

Problem: A customer running Patroni-managed PostgreSQL (PostgreSQL 15.17, Patroni v3.3) had production databases ranging from >2-3 TB up to a ~52 TB physical replica. Rebuilding the empty DR site from production relied on manual pg_basebackup executions and manual post-backup recovery steps, which was too slow, operationally intensive, and prone to human error for such large volumes. The […]

 Knowledge BaseCase Studies
22 Jun 2026 PostgreSQL LWLock LockManager Contention caused by unpruned partition scans and high concurrency

Problem: An OLTP system using Patroni-managed PostgreSQL 15 experienced global slowdowns under load: CPU climbed to ~80%, large numbers of concurrent sessions, and application timeouts. The client reported bursts of traffic (hundreds of workers in parallel) routed through HAProxy to the leader, and provided PostgreSQL and Patroni logs, auto_explain output, and query samples. Key database […]

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