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Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 3525 posts
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[DevOps] Nginx TLS Configuration Complete Guide: PEM/Key Setup and Security Optimization
A comprehensive guide to applying PEM/Key files in Nginx, configuring TLS versions and cipher suites, HSTS, OCSP Stapling, HTTP/2 optimization, and mTLS setup.
2026-03-20 · 11 min read #devops#nginx#tls#ssl#security[DevOps] SSO Server Mocking Guide: Building OAuth2/OIDC Test Environments
A comprehensive guide to mocking SSO (Single Sign-On) servers. Covers OIDC Provider simulation with WireMock, Keycloak test containers, and mock-oauth2-server usage.
2026-03-20 · 11 min read #devops#sso#oauth2#oidc#mocking[AWS] Kinesis in Practice: Kafka Comparison and Streaming Patterns
A detailed comparison of Kinesis with Apache Kafka and SQS, stream analytics with Amazon Managed Flink, real-world streaming architecture patterns, and performance optimization strategies.
2026-03-20 · 16 min read #aws#kinesis#streaming[AWS] Managing GPU Nodes with Karpenter: AI/ML Workload Optimization ♪ Listenable
Advanced guide for AI/ML workloads covering GPU node provisioning with Karpenter, Spot GPU strategies, NVIDIA GPU Operator integration, multi-architecture support, cost optimization, and monitoring.
2026-03-20 · 28 min read #aws#kubernetes#karpenter[AWS] Complete Guide to Kinesis: Real-Time Streaming Data Processing
An in-depth analysis of the AWS Kinesis family (Data Streams, Data Firehose, Managed Flink, Video Streams) architecture and core concepts, with Python code examples for building real-time streaming pipelines.
2026-03-20 · 14 min read #aws#kinesis#streaming[Architecture] Building Async Systems with Message Queues: Kafka vs RabbitMQ
A comprehensive comparison of Kafka and RabbitMQ architectures, async processing patterns for LLM Gateways, practical implementation examples, and a selection guide.
2026-03-20 · 15 min read #architecture#kafka#rabbitmq#async#message-queue[OS Concepts] 20. Linux and Windows 10 Operating System Comparison
Compares Linux kernel architecture, process/memory/filesystem management, kernel modules with Windows 10 architecture, object manager, NTFS, and WSL.
2026-03-19 · 10 min read #operating-system#cs-fundamentals[OS Concepts] 17. Protection: Access Control and Sandboxing
Covers protection goals, protection rings, protection domains, access matrix, RBAC, MAC (SELinux), sandboxing, and code signing.
2026-03-19 · 10 min read #operating-system#cs-fundamentals[OS Concepts] 14. File-System Implementation
Covers file system structure, on-disk/in-memory structures, VFS, directory implementation, allocation methods, free space management, and journaling.
2026-03-19 · 11 min read #operating-system#cs-fundamentals[OS Concepts] 11. Mass-Storage Structure
Covers HDD structure and disk scheduling (SCAN, C-SCAN), NVM (SSD) devices, RAID levels (0-6), object storage, and cloud storage.
2026-03-19 · 10 min read #operating-system#cs-fundamentals[OS Concepts] 08. Deadlocks: Prevention, Avoidance, Detection, Recovery
Covers deadlock characteristics (4 conditions, resource allocation graph), deadlock prevention, deadlock avoidance (safe state, banker's algorithm), and deadlock detection and recovery.
2026-03-19 · 10 min read #operating-system#cs-fundamentals[OS Concepts] 05. CPU Scheduling Algorithms
Covers CPU scheduling concepts (CPU burst, preemptive/non-preemptive), scheduling criteria, algorithms (FCFS, SJF, priority, round robin, multilevel queue/feedback queue), thread scheduling, multiprocessor scheduling, an
2026-03-19 · 8 min read #operating-system#cs-fundamentals[OS Concepts] 02. Operating System Structures and Services
Covers OS services (UI, program execution, I/O, file system, communication, protection), system call types and APIs, OS structures (monolithic, layered, microkernel, hybrid), and the system boot process.
2026-03-19 · 7 min read #operating-system#cs-fundamentals[OS Concepts] 19. Networks and Distributed Systems
Covers network types, TCP/IP model, advantages and challenges of distributed systems, distributed file systems (NFS, GFS, HDFS), MapReduce, and distributed coordination.
2026-03-19 · 10 min read #operating-system#cs-fundamentals[OS Concepts] 16. Security: Threats and Defenses
Covers security threat overview, program threats (malware, code injection, buffer overflow), system/network threats, cryptography, authentication, and security defenses.
2026-03-19 · 9 min read #operating-system#cs-fundamentals[OS Concepts] 13. File-System Interface
Covers file concepts (attributes, operations), access methods (sequential, direct), directory structures, file sharing, and protection (ACL, permissions).
2026-03-19 · 9 min read #operating-system#cs-fundamentals[OS Concepts] 10. Virtual Memory: From Demand Paging to Thrashing
Covers virtual memory concepts, demand paging (page faults, performance), copy-on-write, page replacement algorithms (FIFO, optimal, LRU, clock), frame allocation, thrashing (working set model), and memory-mapped files.
2026-03-19 · 12 min read #operating-system#cs-fundamentals[OS Concepts] 07. Synchronization Problems: Producer-Consumer, Dining Philosophers ♪ Listenable
Covers classic synchronization problems (bounded buffer, readers-writers, dining philosophers), POSIX synchronization (mutex, semaphore, condition variables), Java synchronization, and alternative approaches.
2026-03-19 · 22 min read #operating-system#cs-fundamentals[OS Concepts] 04. Threads and Concurrent Programming
Covers thread concepts and motivation, multicore programming (Amdahl's Law), multithreading models, thread libraries (Pthreads, Java), and implicit threading (thread pools, fork-join, OpenMP).
2026-03-19 · 9 min read #operating-system#cs-fundamentals[OS Concepts] 01. What is an Operating System
Covers the definition and role of an operating system, computer system organization (interrupts, storage hierarchy, I/O), system architecture (multiprocessor, multicore, NUMA), OS operation modes (dual-mode, timer), and
2026-03-19 · 7 min read #operating-system#cs-fundamentals