Roy Caldwell began his career as a Database Consultant at Oracle, advising Fortune 500 clients on Oracle RAC and Data Guard, and leading performance‑tuning and disaster‑recovery initiatives that halved recovery time objectives. He later joined Google Cloud as a Senior Database Engineer, where he architected Cloud Spanner, Cloud SQL, and Bigtable solutions—reducing query latency by 45% and boosting throughput by 60% with automated failover pipelines. As Lead Database Architect at Vinchin, he now designs scalable, high‑availability infrastructures with proactive monitoring to sustain 99.99% uptime and enable zero‑downtime feature releases.
I love playing basketball and trying new taco recipes. I enjoy board games with friends, biking on nearby trails, and hiking in the woods. I also kayak on the lake, take photos of the stars, tinker with small robots, and hunt for the best cup of coffee.
The ORA-19870 error can stop Oracle database restores cold. This guide explains why the error appears and gives clear steps to solve it. Learn how to check disk space, fix file issues, and keep your backups safe.
Dec 09 2025
Kubernetes relies on registries to store and deliver container images. This guide explains the basics of kubernetes registries and gives step-by-step instructions for setting up, securing, optimizing, and troubleshooting them.
Nov 27 2025
Kubernetes CronJobs let you schedule tasks in your cluster like backups or reports. This guide explains the basics and advanced features of CronJobs with clear YAML examples so you can automate routine work easily.
Nov 27 2025
OpenStack and Kubernetes are key tools for modern cloud infrastructure. This article shows how to deploy Kubernetes on OpenStack or connect external clusters. Learn setup methods and best practices for protecting your data.
Nov 19 2025
Kubernetes brings flexibility to IT operations. Running it on VMware lets you use familiar tools and gain strong security. This guide explains two ways to deploy Kubernetes clusters on VMware and how to protect your workloads.
Nov 19 2025
Tape backup drives store data on magnetic tapes for safe long-term archiving. This article explains their benefits, how they work, and practical ways to protect your business data using this trusted technology.
Nov 11 2025
OpenStack handles sensitive workloads that need strong protection from threats. This article explains key types of OpenStack encryption and guides you through setup steps so you can secure your cloud data with confidence.
Nov 11 2025
Migrating physical machines to Hyper-V with Disk2VHD can cause boot failures due to system mismatches or missing partitions. This guide shows clear steps to diagnose and fix these problems so your virtual machine boots successfully.
Nov 11 2025
Amazon EKS clusters run critical workloads that need strong protection. This guide shows you why backups matter and gives step-by-step instructions for three proven ways to secure your EKS data.
Nov 05 2025
Kubernetes runs critical workloads but is not immune to failure. This guide covers key disaster recovery strategies so you can protect data and restore clusters fast. Read on to learn practical steps for resilient operations.
Nov 05 2025
The hadoop platform helps organizations process large data sets with ease. This article explains its core features and guides you through deploying it on both virtual machines and cloud services.
Nov 05 2025
Cloud backup costs can surprise many businesses. This guide explains the main factors that impact your monthly bill per terabyte. Learn how to estimate, compare, and lower your cloud backup expenses with clear steps and practical advice.
Sep 27 2025
