https://www.bloodraven.in/writing/ Recent content in Tech Blogs on Ishan Jain Hugo en-us Ishan Jain Ishan JainThu, 30 Jul 2026 00:00:00 +0000 https://www.bloodraven.in/writing/from-huffman-to-openobserve-why-your-10gb-log-file-fits-in-3gb/ Thu, 30 Jul 2026 00:00:00 +0000 https://www.bloodraven.in/writing/from-huffman-to-openobserve-why-your-10gb-log-file-fits-in-3gb/ Every SRE has run gzip on a log file and watched 10GB collapse into 3GB. It feels like magic. It is not. It is a handful of very old, very simple ideas about redundancy, and once you understand them, the storage numbers behind modern observability tools stop looking like marketing and start looking like arithmetic. Let me walk from first principles up to how a tool like OpenObserve turns those principles into a 140x cost gap. https://www.bloodraven.in/writing/one-valkey-multiple-tenants-per-database-isolation-on-kubernetes/ Wed, 27 May 2026 00:00:00 +0000 https://www.bloodraven.in/writing/one-valkey-multiple-tenants-per-database-isolation-on-kubernetes/ How Valkey 9.1.0’s per-database ACL selector lets you run multiple microservices off one shared cache instance, with hard access boundaries between them. https://www.bloodraven.in/writing/stop-asking-for-a-devops-roadmap.-read-this-instead/ Tue, 19 May 2026 10:00:00 +0530 https://www.bloodraven.in/writing/stop-asking-for-a-devops-roadmap.-read-this-instead/ People who reach out to me and ask “give us a roadmap of becoming a DevOps engineer” or “what was your roadmap” - I go blank. What was my roadmap? I end up saying: learn Docker, K8s, Terraform, or AWS. So I sat down and wrote my thoughts. If I needed to start again with no memory of being a DevOps engineer and read this blog, I should be able to get all the skills required to be good enough. https://www.bloodraven.in/writing/the-curious-case-of-docker-hardend-images/ Sun, 10 May 2026 00:00:00 +0000 https://www.bloodraven.in/writing/the-curious-case-of-docker-hardend-images/ Docker Hardened Images went free and open source in late 2025. Here's what they actually are, why Docker built them, and whether they belong in your production stack. https://www.bloodraven.in/writing/the-curious-case-of-request-and-limit-on-aws-eks-fargate/ Sun, 02 Nov 2025 14:53:00 +0530 https://www.bloodraven.in/writing/the-curious-case-of-request-and-limit-on-aws-eks-fargate/ If you’re running containers on AWS EKS with Fargate, you might have encountered a surprising reality about how billing works. Let me share a scenario that trips up many engineers: The Scenario You have a pod with the following resource specifications: resources: requests: cpu: 100m memory: 500Mi limits: cpu: 4000m memory: 8000Mi At first glance, you might think: “Great! My pod will use minimal resources (100m CPU, 500Mi memory) but can burst up to 4 vCPUs and 8GB when needed.” https://www.bloodraven.in/writing/the-most-practical-way-to-get-started-on-aws-build-a-producation-grade-cloud-setup/ Wed, 17 Sep 2025 10:00:00 +0530 https://www.bloodraven.in/writing/the-most-practical-way-to-get-started-on-aws-build-a-producation-grade-cloud-setup/ When people say ‘learn AWS,’ it’s easy to get lost in a sea of services. In reality, most real-world architectures start with a VPC, subnets, instances, storage, and permissions. In this guide, we’ll build a secure, production-style setup step-by-step — and we’ll do it four ways: AWS Console AWS CLI Bash Automation Scripts Terraform What You Will Gain After Doing This Hands-on experience with core AWS services Learn how to automate (CLI, scripts, Terraform) Cover security best practices (bastion, private DB, IAM roles, S3 VPC endpoints) AWS Architecture Diagram