RRONI DAS1d ago · 12 min readOne zone in London lost power. Why wasn't that a small problem?For most of Tuesday 20 October, people in the UK reported that some of the apps they use to pay, bank and check their credit were not working properly. That same day, Google's status page said one zonsystemdesignacademy.hashnode.dev
OOnlive Server5d ago · 9 min readBuilding a Zero-License Private Cloud: Step-by-Step Proxmox VE 8 High-Availability Cluster DeploymentBuilding a private cloud does not always require a proprietary hypervisor license. With Proxmox Virtual Environment (VE) 8, system administrators can combine virtualization, distributed storage, clustonliveinfotech.hashnode.dev
SShevchenko Ivan6d ago · 7 min readHow to Give a pfSense HA BACKUP Node Access to Networks Behind VPN TunnelsIf OSPF and your VPN tunnels run only on the MASTER of a pfSense HA pair, the BACKUP node goes "blind": it can't reach your syslog server, and you can't ping it from remote networks. There are two sep1Shelp.dc24.cloud
AAtash DasOct 15 · 11 min readSAP Disaster Recovery Architecture — When Each Tool Earns Its PlaceAbstract SAP disaster recovery on AWS is rarely one technology — it's a stack, and picking the wrong tool at any single layer breaks the whole plan. This piece starts with AWS's own architecture patteatashdas.hashnode.dev
JJayesh SojitraOct 13 · 4 min readMulti-AZ vs Multi-Region: What Each Actually Protects AgainstBoth terms get used as if they were two settings on the same dial. They're not. They cover different kinds of failure, and picking one without knowing which failure you're guarding against leads to eijayesh-sojitra.hashnode.dev
UUsman KhanOct 5 · 4 min readAdvanced System Architecture: Designing Multi-Region Read Replicas and Global Data ConsistencyAs enterprise SaaS platforms expand internationally, serving all database queries from a single primary region causes severe latency degradation for global users. Distributing read replicas across mulctousman.hashnode.dev
NN Chandra Prakash ReddySep 13 · 10 min readAWS Outage: A Digital Wake-Up CallLet's face it, when a webpage doesn't load or a streaming video lags forever, our first instinct is to blame our local Wi-Fi. We switch our phones to aeroplane mode, aggressively reset our home networdevopstour.hashnode.dev
RRajesh RaviSep 4 · 10 min readOEM 24ai HA/DR Architecture: What Happens When the Tool Watching Your Estate Goes DownOracle observability post #7 — the last post covered the OEM job system and how to turn routine DBA operations into scheduled, monitored automation. This one turns the lens on OEM itself: what happens1Grajeshravi.com
GGuilherme FerreiraAug 21 · 11 min readKafka for High Availability in Practice: Patterns with Red Hat Streams for Apache KafkaIt was 2:23 PM on a Friday when the alert came in: the order processing service had stopped consuming messages. The Kafka broker in the secondary datacenter had failed, taking down every partition whogferreir.hashnode.dev
SSiddhartha MukherjeeAug 17 · 8 min readDeploying MongoDB on Kubernetes with a Replica Set (3 Replicas)Introduction This guide walks through deploying a MongoDB replica set on Kubernetes using a StatefulSet and a headless Service. It's written for beginners, with step-by-step instructions, YAML manifesiamsidd.hashnode.dev