Case Studies

Problem: A three-site RabbitMQ cluster experienced frequent incidents where a single site would become “stuck” and that condition then caused the entire three-site cluster to block. Symptoms reported included intermittent node unresponsiveness, client operations timing out or hanging, and cluster-wide stalls that required manual intervention to recover. The environment was a geographically distributed, multi-site RabbitMQ […]

Problem: A production security scan flagged CVE-2026-42945 in the Kubernetes ingress controller image. The customer reported use of ingress-nginx/controller:v1.12.1 and also verified the issue exists in ingress-nginx/controller:v1.15.1. The scan result and customer concern described this CVE as a high-severity security exposure affecting live traffic handling in production clusters. The deployment used upstream community controller images […]

Problem: The customer reported that deployed container images nginx:1.31 and nginx:1.31.2 contained a high-severity vulnerability: CVE-2026-55200 (libssh2) with a reported CVSS score of 8.3. Their inventory showed the images were based on Debian 13 (trixie) and the finding originated from a packaged libssh2 version present inside the image. No production outage was reported; the request […]

Problem: An application gateway using the Open Enterprise SDK for Apache Kafka reported that Notification ID 8 was accepted and enqueued by the gateway but never showed downstream dispatch evidence for two subscribers. Gateway instrumentation recorded REST_RECEIVE and SEDA_ENQUEUE events for those transactions, while downstream stages (SEDA_DEQUEUE, HTTP_SEND, EDR_WRITE) were absent in the available exports. […]

Problem: A production PostgreSQL 15.8 deployment running inside a Patroni-managed HA cluster (Patroni 2.1.4) reported transient application failures where processes could not connect and surfaced the message “PostgreSQL connection error, Cannot connect to FX DB”. Database logs showed repeated messages indicating SSL accept-stage failures with the text “could not accept SSL connection: EOF detected”. The […]

Problem: A customer preparing to deploy Langfuse from an AWS Marketplace VM requested guidance for sizing, installation in a VPC, required network ports, and hardening. Their intended use was as a shared enterprise evaluation service for AI applications with about 500 million observability events (traces, spans/steps, evaluation scores). Integration requirements included Langfuse Python/JS SDKs, a […]

Problem: PostgreSQL 15.17 running in a Patroni-managed cluster experienced autovacuum tasks running for five hours or more on very large, non-partitioned tables. Customer-provided artifacts included table size and index statistics, autovacuum logs, pg_settings, and pg_stat_all_tables. Symptoms reported: multi-hour autovacuum/vacuum runs on large tables, continuous cleanup script execution, and 10-hour REINDEX operations on bloated indexes. The […]

Problem: The customer requested a concrete Disaster Recovery (DR) strategy for a Debezium-based CDC platform covering supported DR architectures, Active‑Active vs Active‑Passive tradeoffs, replication/failover mechanisms, Kafka dependencies, metadata/offset/schema‑history recovery, RTO/RPO targets, infrastructure prerequisites, and DB‑specific guidance for Oracle, Postgres and MySQL. The existing environment used Debezium connectors, Kafka, cross‑cluster replication (MirrorMaker2), and a managed schema […]

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 […]