// OSSeva Blog
Insights on enterprise open source
CVE analysis, compliance guidance, migration playbooks, and open source strategy from engineers who run these systems in production.
258 articles
Kafka vs Redis: Streams, Pub/Sub, Queues and When to Use Each
Kafka is a distributed event log built to keep data on disk and let many consumers replay it. Redis is an in-memory data store with three ways to move messages: lists, Pub/Sub and streams. How Kafka compares with Redis Streams, Redis Pub/Sub and a Redis queue, what each does after a failover, and when Redis is all you need.
Kafka vs NATS (and JetStream): Design, Delivery, Performance and Where RabbitMQ Fits
NATS is a lightweight messaging system built around subjects, request and reply, and queue groups, with JetStream adding persistence. Kafka is a partitioned event log. How Core NATS, NATS JetStream, Kafka and RabbitMQ differ on storage, delivery guarantees and replication, what can honestly be said about performance, and which to choose.
ActiveMQ Classic vs Artemis: Which Broker to Run, Support Status and Performance
ActiveMQ Classic and Apache Artemis are two different brokers that grew up under one name. Both are maintained in October 2026. How they differ on architecture, protocols, JMS support, high availability and storage, what can be said about performance, and how to decide whether to stay on Classic or move to Artemis.
Apache Camel vs Spring Integration: Differences, When to Use Each and Support Windows
Apache Camel and Spring Integration both implement the Enterprise Integration Patterns on the JVM. Camel is a standalone integration framework with 350+ components that runs on Spring Boot, Quarkus or its own CLI. Spring Integration extends the Spring programming model with channels, adapters and gateways. How they differ, when each is the better choice, and how long each line is supported.
Consul vs Eureka (and ZooKeeper) for Service Discovery in Spring Cloud
Eureka is a lightweight service registry from Netflix, used through Spring Cloud Netflix. Consul is a broader service networking tool with a Raft-backed catalogue, health checks, DNS, a key/value store and a service mesh. How they differ, how each works with Spring Cloud, where ZooKeeper fits, and what Consul's licence change means for the choice.
MongoDB vs MySQL vs PostgreSQL: Data Model, Transactions, Scaling, Licensing and Which to Choose
MongoDB stores JSON-like documents with a flexible schema and shards data across machines as part of the server. MySQL stores rows in tables with a fixed schema, joins and SQL. How they differ on data model, transactions, scaling, licensing and support, where PostgreSQL fits, and how to pick.
PostgreSQL vs Aurora PostgreSQL vs RDS: Architecture, Billing, Version Support and When to Self-Manage
Aurora PostgreSQL is AWS's PostgreSQL-compatible engine on a shared, distributed storage layer. RDS for PostgreSQL is community PostgreSQL run by AWS. Self-managed PostgreSQL is the same engine on servers you control. How the three differ on architecture, failover, extensions, version calendar and the way each is billed.
Spring Boot vs Quarkus vs Micronaut: Startup, Native Images, Ecosystem, Support and Which to Choose
Spring Boot is the default Java framework with the largest ecosystem. Quarkus and Micronaut move framework work from startup to build time, which suits containers, serverless and native executables. How the three compare on architecture, native images, Spring compatibility, release support and migration effort.
Hadoop vs Spark vs Kafka: How They Differ, How They Fit Together, and Where Databricks and Hive Come In
Hadoop is storage and resource management: HDFS, YARN and MapReduce. Spark is a processing engine that often runs on top of them. Kafka moves and stores event streams. They are layers more than rivals. How they differ, how they combine, and where Databricks and Hive fit.
Hive vs Trino vs Presto: Batch Warehouse or Interactive Query Engine, the PrestoSQL Split, and Which to Use
Hive is a SQL data warehouse for large, fault-tolerant batch jobs, with the metastore most of the ecosystem shares. Trino and Presto are interactive query engines that read Hive tables through that metastore and federate other sources. How they differ, why there are two Prestos, and how to choose.
Valkey vs KeyDB vs Redis: Threading, Maintenance Status, Licensing and Which to Run in 2026
KeyDB is a multithreaded Redis fork owned by Snap whose last release shipped in October 2023. Valkey is the BSD-licensed Linux Foundation fork of Redis with regular releases and I/O threading since version 8. How they compare on threading, features, maintenance and licensing, where Redis fits, and how to move off KeyDB.
RabbitMQ 3 to 4 Upgrade: The Supported Path From 3.12 and 3.13 to 4.3
There is no direct jump from RabbitMQ 3.13 to 4.3. The supported path is 3.12 to 3.13, 3.13 to 4.2, then 4.2 to 4.3, with every stable feature flag enabled before each hop, mirrored queues gone before the first 4.x node starts and Khepri switched on before 4.3. The path, the checks for each breaking change and why there is no way back except blue-green.
Kafka 3 to 4 Upgrade: The Path From a 3.x Cluster to Kafka 4.3
A Kafka 3.x cluster in KRaft mode on 3.3 or later can roll straight to 4.3. A cluster still on ZooKeeper cannot: it migrates to KRaft on 3.9 first. Then come Java 17 for brokers, the KIP-896 client floor, removed configurations, Log4j2 and a finalize step you cannot take back. The path, a check for each change and the order of work.
MongoDB 7 to 8 Upgrade: The Path From 6.0 and 7.0 to 8.0, and On to 9.0
MongoDB 8.0 can only be reached from 7.0, 7.0 only from 6.0, and the new 9.0 from 8.0 or 8.3, one major release at a time with featureCompatibilityVersion raised after each. Community Edition cannot downgrade binaries from 7.0 or 8.0, while 9.0 can step back to 8.0. The path, the changes that bite at each step with a check for each, and the commands.
Redis 7 to 8 Upgrade: The Path From 6.2 and 7.x, Data File Compatibility and the Valkey Option
Redis documents upgrades to Redis 8 from 7.x and from Redis Stack 7.2 and 7.4. A 6.2 server goes to 7.x first. Every step writes a newer RDB format that older servers cannot load, and every step past 7.2 changes the licence: 7.4 is RSALv2 or SSPLv1, 8 adds AGPLv3. The path, the changes to check at each step, rollback limits and when Valkey is the better route.
Spring Boot 3.5 to 4 Upgrade Guide: Breaking Changes and How to Find Each
Spring Boot 4 keeps Java 17 as the minimum but moves to Spring Framework 7, Jakarta EE 11 and Servlet 6.1, switches to Jackson 3, splits auto-configuration into smaller modules and drops Undertow. The changes from the official migration guide, a search or build check for each, and an order of work that keeps the 3.5 build deployable.
MariaDB 10.6 to 10.11 Upgrade Guide, and On to 11.4, 11.8 or 12.3
MariaDB 10.6 left community maintenance on 6 July 2026. mariadb-upgrade can bring its data files straight to 10.11, 11.4, 11.8 or 12.3, so the real choice is the target. The incompatibilities MariaDB documents for each LTS step, a query or search for each, the package procedure, Galera notes and why rollback means a restore.
ActiveMQ 5.18 to 5.19 Upgrade Guide, and When to Go to 6.x Instead
ActiveMQ Classic 5.18 is inactive and has no fix for CVE-2026-34197. Moving to 5.19 keeps javax.jms, Java 11 and the same Spring and Jetty generation, so it is a broker swap. Moving to 6.3 means Jakarta Messaging, Java 17, Spring 7 and Jetty 12.1. What changes on each path, how to check for it, and how to keep a way back for the KahaDB store.
OpenSearch 2 to 3 Upgrade Guide: Breaking Changes, Rolling Upgrade Rules and Amazon OpenSearch Service
A rolling upgrade to OpenSearch 3 starts from 2.19, needs JDK 21 and Lucene 10-compatible indexes, and cannot be reversed in place. The breaking changes from the OpenSearch 3.0.0 documentation with a check for each, the node order for the rolling upgrade, and what Amazon OpenSearch Service adds to the procedure.
Percona Alternatives: Support Options for MySQL, PostgreSQL and MongoDB
Percona supports MySQL, PostgreSQL, MongoDB, MariaDB and Valkey, sells post-EOL support for MySQL 5.7 and 8.0, and quotes every contract individually. The alternatives for each database, what Percona's extended support does and does not cover, how the pricing models differ, and when Percona is still the right call.
PostgreSQL Enterprise Support: Who Supports PostgreSQL and How It Is Priced
No single company owns PostgreSQL, so enterprise support comes from vendors. The PostgreSQL Global Development Group, EDB, Crunchy Data, Percona, the cloud providers and OSSeva compared: what each supports, which versions, and the pricing models behind their quotes.
Is MySQL Enterprise Edition Free? MySQL Licensing and Support Cost Explained
MySQL Enterprise Edition is not free: Oracle sells it as an annual subscription counted per server. MySQL Community Edition is free under the GPL. What Enterprise adds, how Oracle prices MySQL subscriptions, what drives MySQL support cost, and how to get support for Community servers without an Oracle contract.
Valkey Enterprise Support: Options for Production Valkey
Valkey is a Linux Foundation project with a published maintenance policy and no single vendor. Who sells enterprise and commercial support for it, from managed cloud services to Percona, Canonical and OSSeva, which versions each covers, how each prices, and what to ask before you sign.
Oracle Third-Party Database Support vs Leaving Oracle
Third-party Oracle support keeps the release you run supported without paying Oracle for support. Leaving Oracle for PostgreSQL removes the licence altogether. How Oracle's own Premier, Extended and Sustaining Support work, what providers such as Rimini Street and Spinnaker Support offer, when each path is the better fit, and how to combine them.
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- Kafka vs Redis: Streams, Pub/Sub, Queues and When to Use Each
- Kafka vs NATS (and JetStream): Design, Delivery, Performance and Where RabbitMQ Fits
- ActiveMQ Classic vs Artemis: Which Broker to Run, Support Status and Performance
- Apache Camel vs Spring Integration: Differences, When to Use Each and Support Windows
- Consul vs Eureka (and ZooKeeper) for Service Discovery in Spring Cloud
- MongoDB vs MySQL vs PostgreSQL: Data Model, Transactions, Scaling, Licensing and Which to Choose
- PostgreSQL vs Aurora PostgreSQL vs RDS: Architecture, Billing, Version Support and When to Self-Manage
- Spring Boot vs Quarkus vs Micronaut: Startup, Native Images, Ecosystem, Support and Which to Choose
- Hadoop vs Spark vs Kafka: How They Differ, How They Fit Together, and Where Databricks and Hive Come In
- Hive vs Trino vs Presto: Batch Warehouse or Interactive Query Engine, the PrestoSQL Split, and Which to Use
- Valkey vs KeyDB vs Redis: Threading, Maintenance Status, Licensing and Which to Run in 2026
- RabbitMQ 3 to 4 Upgrade: The Supported Path From 3.12 and 3.13 to 4.3
- Kafka 3 to 4 Upgrade: The Path From a 3.x Cluster to Kafka 4.3
- MongoDB 7 to 8 Upgrade: The Path From 6.0 and 7.0 to 8.0, and On to 9.0
- Redis 7 to 8 Upgrade: The Path From 6.2 and 7.x, Data File Compatibility and the Valkey Option
- Spring Boot 3.5 to 4 Upgrade Guide: Breaking Changes and How to Find Each
- MariaDB 10.6 to 10.11 Upgrade Guide, and On to 11.4, 11.8 or 12.3
- ActiveMQ 5.18 to 5.19 Upgrade Guide, and When to Go to 6.x Instead
- OpenSearch 2 to 3 Upgrade Guide: Breaking Changes, Rolling Upgrade Rules and Amazon OpenSearch Service
- Percona Alternatives: Support Options for MySQL, PostgreSQL and MongoDB
- PostgreSQL Enterprise Support: Who Supports PostgreSQL and How It Is Priced
- Is MySQL Enterprise Edition Free? MySQL Licensing and Support Cost Explained
- Valkey Enterprise Support: Options for Production Valkey
- Oracle Third-Party Database Support vs Leaving Oracle
- Oracle to PostgreSQL Migration Using Ora2Pg: Step by Step
- AWS Oracle to PostgreSQL Migration: SCT, DMS and What They Leave to You
- SQL Server to PostgreSQL Migration Using pgloader
- SQL Server to Aurora PostgreSQL Migration: Babelfish vs Full Conversion
- Azure Functions .NET 8 End of Support: The Isolated Worker Warning Explained
- Azure App Service .NET 8 End of Support: What Happens to Your Web App
- AWS Lambda .NET 8 Runtime Deprecation: Dates and Upgrade Path
- .NET 8 Docker Images After End of Support: mcr.microsoft.com Tags and What Changes
- How to Document End-of-Life Software Risk: Risk Register, Exceptions and Compensating Controls
- End-of-Life Software Policy Template for Open Source Infrastructure
- Who Provides Support for Apache Hadoop 2.x and 3.x After End of Life?
- Who Provides Support for Apache HBase 1.x and 2.x After End of Maintenance?
- Who Provides Support for Apache Flink 1.x and 2.x?
- Who Provides ClickHouse Support for Releases Outside the LTS Window?
- Who Provides HashiCorp Consul Support After the BSL Change and IBM?
- Who Provides Support for Hazelcast IMDG 3.x, 4.x and Older 5.x Releases?
- Who Provides Support for Erlang/OTP 25 and 26 After End of Life?
- How to Consolidate Open Source Database Support Contracts Without Migrating Anything
- Who Supports PostgreSQL, MySQL, MariaDB, Valkey and RabbitMQ Under One Contract?
- MySQL 8.0 End of Life: Dates, Consequences, and Your Options on AWS, Azure and Self-Managed
- MySQL 8.0 to 8.4 Upgrade Guide: Breaking Changes and How to Check for Each
- EDB Alternatives: Where to Get PostgreSQL Support If Not From EnterpriseDB
- Redis Enterprise Alternatives: Valkey, Redis Open Source, Cloud Caches and Support Options
- Cloud Database Repatriation: Moving RDS, Aurora, Azure and Cloud SQL Back to Self-Managed Open Source
- How to Switch PostgreSQL Support Vendors Without Migrating Your Databases
- Oracle to PostgreSQL Migration: A Step-by-Step Guide
- Oracle to PostgreSQL Migration Challenges: 11 Traps and Their PostgreSQL Equivalents
- PL/SQL to PL/pgSQL Conversion: Patterns With Code Examples
- Oracle Database Alternatives: PostgreSQL, EDB, MariaDB, Cloud and Distributed Options Compared
- Oracle License Audit or Renewal? Your Options, From Negotiating to a Full Exit
- SQL Server to PostgreSQL Migration: Tools, T-SQL Differences and Data Types
- What Drives the Cost of an Oracle to PostgreSQL Migration
- Open Source Support RFP Template: A Vendor Questionnaire for Database and Messaging Support
- Open Source Support Contract Checklist: What to Check Before You Sign or Renew
- How to Reduce Database Support Costs Without Cutting Coverage
- FIPS 140-3 for PostgreSQL, MySQL, MariaDB and Valkey: What Is Validated and What Is Not
- How to Verify PostgreSQL, MySQL and MariaDB Packages and Images Before You Install Them
- How Fast Do PostgreSQL, MySQL, MariaDB and Valkey Ship Security Fixes?
- SBOMs and VEX for PostgreSQL, MySQL and Valkey: What to Generate and What Auditors Ask For
- Oracle 19c End of Life: Premier, Extended and Sustaining Support Dates
- Oracle 21c and 23ai Support Dates: 21c Ends in July 2027, and 23ai Is Now 26ai
- SQL Server 2016 End of Support: ESU Terms, Dates and Your Options
- SQL Server 2017 End of Support: 12 October 2027 and What to Do Before Then
- SQL Server 2019 End of Support: Mainstream Has Ended, Extended Runs to January 2030
- MySQL 8.4 End of Life: LTS Dates, 9.7 LTS and the New Version Numbers
- MariaDB vs MySQL: Licensing, Compatibility, Support Lifecycles and When to Choose Each
- pgvector in Production: HNSW vs IVFFlat, the Limits, and When a Dedicated Vector Database Fits Better
- Does Valkey Support Vector Search? valkey-search, ElastiCache for Valkey and Redis Compared
- PostgreSQL Kubernetes Operators Compared: CloudNativePG, Zalando, Crunchy PGO, Percona, StackGres and EDB
- MySQL Kubernetes Operators Compared: Oracle MySQL Operator, Percona, Vitess and mariadb-operator
- Valkey Kubernetes Operator: Official and Community Options, Helm Charts After Bitnami, and HA Modes
- PostgreSQL Minor Version Upgrade: Patching Steps for Linux, Windows, Containers, RDS and Aurora
- MySQL Patching Steps: Minor Version Upgrades on Linux, Windows, Containers and Amazon RDS
- Kafka vs RabbitMQ: Logs, Queues, Replay and When to Choose Each
- RabbitMQ vs ActiveMQ: Classic, Artemis, Support Status and How to Choose
- Kafka vs Pulsar: Architecture, Storage, Geo-Replication and When to Choose Each
- ClickHouse vs PostgreSQL: OLAP vs OLTP, and When to Run Both
- Patroni vs repmgr: PostgreSQL High Availability Tools Compared, with pg_auto_failover, Pgpool-II and CloudNativePG
- PostgreSQL vs MySQL: Syntax Differences, Licensing, Replication and Which to Choose
- PostgreSQL vs Oracle: SQL Syntax Differences, Performance and Licensing Compared
- MongoDB vs PostgreSQL: JSONB, Performance, Licensing and Which Is Better
- Elasticsearch vs OpenSearch: Licensing History, Version Support, AWS and Vector Search
- Redis vs Memcached vs Valkey: Features, Threading, Licensing and ElastiCache Options
- RabbitMQ vs Redis: Queues, Delivery Guarantees, Celery and When to Use Each
- Kafka vs Kinesis: Shards, Partitions, Retention, MSK and When to Choose Each
- ActiveMQ vs Kafka: Broker vs Event Log, Use Cases, Performance and How to Choose
- NiFi vs Airflow: Dataflow vs Orchestration, Kafka, Apache Hop and How to Choose
- Flink vs Spark: Streaming Models, State, Batch, Kafka Streams and How to Choose
- Hazelcast vs Redis vs Apache Ignite: Caching, Data Grids, Licensing and When to Use Each
- Solr vs Elasticsearch vs OpenSearch: Architecture, Licensing, Performance and Which to Choose
- Tomcat vs Jetty vs Undertow vs Netty: Servlet Containers, Spring Boot Support and Which to Run
- MariaDB vs PostgreSQL: Architecture, Features, Performance and Which to Choose
- Apache Druid vs ClickHouse vs Apache Pinot: Real-Time Analytics Architectures Compared
- Node.js Release Schedule Explained: Current, Active LTS, Maintenance and the Change in Node.js 27
- .NET LTS vs STS: Support Lengths, the 24-Month STS Change and Which Version to Use
- Apache Storm Vulnerabilities by Version: CVEs for Storm 1.2, 2.x and 3.x
- etcd Vulnerabilities by Version: CVEs for etcd 3.3, 3.4, 3.5, 3.6 and 3.7
- ClickHouse Vulnerabilities by Version: CVEs for ClickHouse 22.x to 26.x, LTS and Stable
- Open Source Compliance: 9 Audit-Ready Evidence Checks
- Open Source Compliance vs Security: What Teams Need
- Open Source Security vs Support: Which Fixes Risk Faster?
- Redis and Valkey Support Providers Compared (Self-Managed and Managed)
- Who Provides Node.js Security Patches After End of Life? (Node 18 and 20)
- Who Provides .NET 8 Extended Support After November 2026?
- Who Provides PostgreSQL Support After End of Life? (PostgreSQL 12, 13 and 14)
- ActiveMQ Support Providers Compared: Classic and Artemis
- Who Provides Spring Boot and Spring Framework Support After Open Source End of Life?
- Fixing ImagePullBackOff After Bitnami Moved Images to bitnamilegacy
- Alternatives to the Bitnami PostgreSQL Helm Chart
- Chainguard vs Docker Hardened Images vs Bitnami Secure Images: Which Covers EOL Versions?
- Tools for Tracking End-of-Life Software Across an Organization
- Who Provides Extended Support for Apache Camel 3 and Camel 4 LTS?
- Who Provides Extended Support for Apache Solr 8 and Solr 9?
- Who Provides Extended Support for Apache NiFi 1.x After NiFi 2.0?
- Who Provides Extended Support for Apache Pulsar 3.0 LTS and 4.0?
- Who Provides Extended Support for Apache Ignite 2.x and Ignite 3?
- Who Supports VMware GemFire 9.x Besides Broadcom, and Is There Commercial Support for Apache Geode?
- Who Provides RabbitMQ Support for 3.x and 4.x After Broadcom?
- Who Provides Apache Kafka Support for 2.x and 3.x, Including ZooKeeper Mode?
- Who Provides Support for End-of-Life MongoDB 4.x, 5.0 and 6.0?
- Who Provides Support for End-of-Life Elasticsearch 7.x and 8.x?
- Who Provides Extended Support for Apache Tomcat 8.5 and 9.0?
- ActiveMQ Classic Vulnerabilities by Version: CVEs for 5.15 to 5.19 and 6.x
- Redis Vulnerabilities by Version: CVEs for Redis 6.2, 7.0, 7.2, 7.4 and 8.x
- Erlang/OTP Vulnerabilities by Version: CVEs for OTP 24 to 29 and the RabbitMQ Releases That Pin Them
- Apache Solr Vulnerabilities by Version: CVEs for Solr 7, 8, 9 and 10
- Apache Camel Vulnerabilities by Version: CVEs for Camel 3.x and the 4.x LTS Lines
- Apache NiFi Vulnerabilities by Version: CVEs for NiFi 1.x and 2.x
- Apache Kafka Vulnerabilities by Version: CVEs for Kafka 2.8, 3.x and 4.x
- RabbitMQ Vulnerabilities by Version: CVEs for RabbitMQ 3.x, 4.0, 4.1, 4.2 and 4.3
- Apache Tomcat CVEs by Release: Which 9.0, 10.1 and 11.0 Version Fixes Each 2025 and 2026 CVE
- PostgreSQL Vulnerabilities by Version: CVEs for PostgreSQL 11, 12, 13, 14 and Later
- Spring Boot Vulnerabilities by Version: CVEs for Spring Boot 2.7, 3.x and 4.x
- Elasticsearch Vulnerabilities by Version: CVEs for Elasticsearch 7.x, 8.x and 9.x
- MongoDB Vulnerabilities by Version: CVEs for MongoDB 4.4, 5.0, 6.0, 7.0 and 8.x
- .NET Vulnerabilities by Version: CVEs for .NET 6, 7, 8, 9 and 10
- Apache Artemis Vulnerabilities by Version: CVEs for ActiveMQ Artemis 1.x and 2.x
- Apache Pulsar Vulnerabilities by Version: CVEs for Pulsar 2.x, 3.x, 4.x and 5.0
- Spring Security Vulnerabilities by Version: CVEs for Spring Security 5.7, 5.8, 6.x and 7.x
- Apache Hadoop Vulnerabilities by Version: CVEs for Hadoop 2.x, 3.2, 3.3, 3.4 and 3.5
- Hazelcast Vulnerabilities by Version: CVEs and Advisories for IMDG 3.12, 4.x and Platform 5.x
- Apache Ignite Vulnerabilities by Version: CVEs for Ignite 2.x and Ignite 3
- GemFire and Geode Vulnerabilities by Version: CVEs for Tanzu GemFire 9.x and 10.x and Apache Geode 1.x and 2.x
- HashiCorp Consul Vulnerabilities by Version: CVEs for Consul 1.x and 2.0, Community and Enterprise
- Apache HBase Vulnerabilities by Version: CVEs for HBase 1.7, 2.x and 3.0
- Apache Hive Vulnerabilities by Version: CVEs for Hive 1.2, 2.3, 3.1 and 4.x
- Apache Druid Vulnerabilities by Version: CVEs for Druid 0.x and 24 to 38
- Apache Flink Vulnerabilities by Version: CVEs for Flink 1.x, 1.20 LTS and 2.x
- Upgrade Node.js 18 or 20 to 22 or 24: Breaking Changes, Steps and Rollback
- Migrate Redis to Valkey: A Step-by-Step Cutover With Rollback
- Upgrade ZooKeeper 3.4 or 3.5 to 3.8 or 3.9 In Place: A Rolling Upgrade Guide
- Upgrade PostgreSQL 14 Before 12 November 2026: pg_upgrade vs Logical Replication
- Spring Support Calendar 2026 to 2027: Every Spring Boot, Framework and Security Deadline
- Kafka on ZooKeeper After 2026: Apache, Confluent and Cloud End-of-Support Dates
- Upgrading MongoDB 4.4, 5.0 or 6.0 to 7.0 or 8.0: The Version-by-Version Path
- Elasticsearch 7.17 Upgrade Options: Elasticsearch 8.19, 9.x or OpenSearch
- Upgrading Erlang/OTP 26 to 27 or 28 Under RabbitMQ: Order, Packages and Testing
- Spring Security 5.8 to 6.x Migration: What Breaks and How to Prepare on 5.8
- EU Cyber Resilience Act and End-of-Life Open Source
- What Is a VEX Statement, and How Do Auditors Use It?
- NIST SP 800-53 SA-22: Unsupported System Components and End-of-Life Open Source
- Upgrading Apache Pulsar 3.0 LTS to 4.0 LTS: Path, Breaking Changes, Order and Rollback
- Migrating Apache Tomcat 9.0 to 10.1: The Tomcat-Specific Checklist
- Upgrading Apache HBase 2.4 to 2.5 or 2.6: Compatibility, Breaking Changes, Rolling Order and Rollback
- Migrating Apache Ignite 2.x to Ignite 3: What Changes, What the Migration Tools Do, and When to Stay on 2.x
- Upgrading Tanzu GemFire 9.15 and 10.0 to 10.2 or 10.3: Upgrade Path, Java 17, Jakarta and Rolling Upgrades
- Upgrading Apache Hadoop 2.10 to 3.3 or 3.4: Java, Ports, Shell Scripts, Rolling Upgrade Limits and the Stack Above HDFS
- Upgrading Apache Flink 1.18, 1.19 and 1.20 to Flink 2.x: Removed APIs, State, config.yaml, Connectors and Rollback
- Upgrading Elasticsearch 8.19 to 9.x: The 8.19 Stop, 7.x Indices, Breaking Changes, Clients, Rolling Order and Rollback
- Upgrading HashiCorp Consul from 1.14, 1.15 or 1.16: Upgrade Path, Version Notes, Envoy, Server Order and Rollback
- Upgrading ClickHouse LTS Releases: From 24.x and 25.x to 26.3 or 26.8 LTS, Changelog Checks, the compatibility Setting and Rolling Replicas
- RabbitMQ September 2026 CVEs: Which Versions Are Fixed and Which Are Not
- Erlang/OTP CVE-2026-89422 and OTP 26: What RabbitMQ 3.13 Users Need to Know
- Apache ActiveMQ Artemis CVE-2026-57967: Fixed Only in 2.57.0
- Node.js Vulnerabilities by Version: CVEs for Node 18, 20, 22, 24 and 26
- RabbitMQ Licence: MPL 2.0, Tanzu RabbitMQ and What You Can Run for Free
- ZooKeeper Support Providers Compared: Instaclustr, Ksolves, Cloudera, Confluent and OSSeva
- ZooKeeper Vulnerabilities by Version: CVEs in 3.4 to 3.9
- ZooKeeper Alternatives: ZooKeeper vs etcd, Consul, KRaft and ClickHouse Keeper
- Why Your Scanner Flags the ZooKeeper Inside a Product You Bought, and How VEX Attestation Answers It
- Consul on an End-of-Life Version: Upgrade, Patch or Migrate
- Cloudera CDH and HDP End of Life: Dates, the ZooKeeper Underneath, and Your Options
- The Raft Consensus Algorithm Explained: How It Works and Where It Runs
- ClickHouse Keeper vs ZooKeeper: Compatibility, Migration and Sizing
- etcd 3.4 End of Life: Upgrading to 3.5 and 3.6, With Backup and Restore
- Apache HBase Support: End-of-Life Lines, ZooKeeper and Upgrades
- Apache Druid Support Options: Releases, ZooKeeper and Upgrades
- Hive 3 End of Life: Upgrading from Hive 3 to Hive 4
- Apache Storm 2 End of Life: Upgrading from Storm 2.x to 3.x
- Flink High Availability: ZooKeeper vs Kubernetes HA Services
- Patroni DCS: Moving a Cluster from ZooKeeper to etcd
- Hadoop on an End-of-Life Version: Upgrade, Patch or Migrate
- Spring Framework Vulnerabilities by Version: CVEs for 5.3.x, 6.0.x and 6.1.x
- Migrating RabbitMQ Classic Mirrored Queues to Quorum Queues: The 3.13 to 4.x Guide
- Kafka ZooKeeper to KRaft Migration: The Runbook for Self-Managed 3.x Clusters
- Confluent Platform 7.x End of Support: What the 7.8 and 7.9 Dates Mean for ZooKeeper Clusters
- Bitnami Legacy Images: How to Replace the Legacy Repository Without Breaking Your Helm Charts
- What Is Bitnami Secure Images? Pricing, Licence and Alternatives
- RabbitMQ 4.0 Breaking Changes: The Checklist Before You Leave 3.13
- Kafka 4.0 Client Compatibility: Which Clients Break Under KIP-896
- Amazon MSK Kafka Version End of Support: 3.6, 3.7 and the Move to 3.9 and KRaft
- RDS Extended Support for PostgreSQL: What It Costs and the Alternatives
- ElastiCache Extended Support for Redis OSS: Dates, Costs and How to Avoid It
- MongoDB 5.0+ Requires a CPU with AVX Support: Causes and Fixes
- javax to jakarta Migration: A Practical Guide to the Package Rename
- .NET 8 to .NET 10 Upgrade Guide: Breaking Changes, SDK Steps and a Test Plan
- Tomcat 9 EOL and the Tomcat 9.1 Branch: 9.0 Ends 31 March 2027, 9.1 Runs to 2030
- ERR_OSSL_EVP_UNSUPPORTED in Node.js: Why It Happens and How to Fix It Properly
- Migrating ActiveMQ Classic to Artemis: What Actually Changes
- Migrating Apache Camel 3 to 4: Java 17, Jakarta, and the Components That No Longer Exist
- Advisory Review, Q3 2026: Spring, NiFi, ZooKeeper and Erlang/OTP
- The Bitnami Catalogue Change: What Actually Happened, and What Replaced It
- RabbitMQ and Erlang Version Compatibility: Which Brokers Have No Supported Runtime Left
- Upgrading Apache NiFi 1.x to 2.0: The Sequence, What Breaks, and How to Scope It
- Upgrading Apache Solr 8 to 9: Reindexing, Java 11, and the Relevance Regression Nobody Budgets For
- Migrating Hazelcast IMDG 3.x to Platform 5: Why There Is No Rolling Upgrade
- FDA, Off-the-Shelf Software, and the EOL Component Problem
- SBOMs Find Your EOL Components. They Do Not Fix Them.
- Valkey vs Redis: The Licence, the Fork, and How to Choose in 2026
- The Redis Licence Change, Accurately: RSALv2, SSPLv1, AGPLv3 and What Each Means
- Broadcom TrueSource Explained: What It Covers and Leaves Out
- Apache Kafka vs Confluent: What You Actually Get, and What It Locks You Into
- RabbitMQ on an End-of-Life Version: Upgrade, Patch or Migrate
- OpenTofu vs Terraform: A Practical Migration Guide for Enterprise Infrastructure Teams
- PostgreSQL 11, 12, and 13 End of Life: What Enterprises Need to Know
- Spring Framework 5.3 and Spring Boot 2.7 End of Life: Enterprise Options
- Kafka on an End-of-Life Version: Upgrade, Patch or Migrate
- PCI DSS and EOL Open Source: What Requirement 6 Demands and How QSAs Assess It
- Dependency Confusion Attacks: How They Work and How to Defend Your Supply Chain
- How to Manage CVE Risk for End-of-Life Open Source in Regulated Industries
- Node.js 18 End of Life: What Enterprise Teams Need to Do
- Open Source Governance: Building a Policy Framework That Engineers Will Actually Use
- EU DORA Compliance for Financial Firms Using Open Source Infrastructure
- Multi-Cluster OSS Management: Operational Patterns for Enterprise Scale
- Container Image Hardening: Reducing Your CVE Surface by 80%
- PostgreSQL Major Version Upgrades: A Risk-Managed Approach for Production Systems
- Open Source Supply Chain Security: Protecting Your Pipeline from Malicious Packages
- PostgreSQL Operational Runbook: Backup, Recovery, and High Availability
- GPL Compliance in Enterprise SaaS: What Your Legal Team Needs to Know in 2025
- Apache Tomcat Vulnerabilities by Version: 8.5, 9.0, 10.1, 11
- SOC 2 and End-of-Life Open Source: How Auditors Are Evaluating Runtime Risk
- Kubernetes CVE-2023-2728: Understanding the NodeRestriction Admission Bypass
- Kafka Cluster Operations: Day-2 Management for Enterprise Deployments
- OpenSSL Vulnerability Management: Lessons from CVE-2022-0778 and CVE-2023-0286
- PostgreSQL Security After EOL: What Changes When the Community Stops Patching
- Exiting Confluent Platform: An Enterprise Migration Playbook to Apache Kafka
- Beyond Point-in-Time Audits: Building Continuous SBOM Compliance
- HIPAA Technical Safeguards and Open Source Software: What Your Risk Assessment Needs to Cover
- VMware Tanzu EOL: Mapping a Migration Path to Open Source Alternatives
- RabbitMQ Production Operations: Monitoring, Alerting, and Incident Response
- Spring Boot 3 Migration Guide: From Spring Boot 2.7 to 3.x, and On to 4.0
- Log4Shell Two Years Later: Why Enterprise Java Stacks Are Still Exposed
- Apache Kafka Security: Known CVEs and What They Mean for EOL Versions
- RabbitMQ CVE Analysis: High-Severity Vulnerabilities in EOL Versions
Frequently asked questions
What topics does the OSSeva blog cover?
The OSSeva blog covers: CVE deep dives and technical analysis of vulnerabilities in enterprise open-source software, compliance and regulatory guidance for engineering and security teams, migration guides (Oracle to PostgreSQL, Tanzu to OSS RabbitMQ, Confluent to Kafka), EOL timelines and planning guides for major open-source projects, and operational best practices for RabbitMQ, Kafka, PostgreSQL, and Spring in enterprise environments.
Does OSSeva publish CVE analysis publicly?
Yes. OSSeva publishes technical CVE analysis for all remediations in our public vulnerability directory and expanded CVE deep-dives on the blog. These posts cover: the technical root cause of the vulnerability, how it can be exploited, which versions are affected, what the OSSeva patch does, and how to verify your deployment is fixed. These posts are designed for engineers who need to understand the vulnerability, not just apply a patch.