Hidekazu Konishi - Profile / Biography | hidekazu-konishi.com

IPv6-First VPC Design on AWS - IPv6-Only Subnets, DNS64 and NAT64, and Dual-Stack Migration | hidekazu-konishi.com A Level 300 guide to IPv6-first VPC design on AWS: IPv6 CIDR and IPAM address planning, IPv6-only versus dual-stack subnets, egress-only int…

Japanese and CJK Text Preprocessing for RAG - Tokenization, Normalization, and Chunk Boundaries | hidekazu-konishi.com A specification-grounded guide to preprocessing Chinese, Japanese, and Korean text for RAG: Unicode normalization, lexical and subword t…

Designing Websites for AI Agents - llms.txt, Structured Data, and Agent-Readable Web Practices | hidekazu-konishi.com A practical, primary-sourced guide to designing websites that AI agents can find, parse, and cite: robots.txt and AI crawler user-agents,…

Model Context Protocol Specification Version Timeline - Version-by-Version Changes and Adoption Milestones | hidekazu-konishi.com Model Context Protocol specification version timeline covering every date-based revision - 2024-11-05, 2025-03-26, 2025-06-18,

Python Version Support and EOL Timeline - Release Schedule, Support Policy, and End-of-Life Dates | hidekazu-konishi.com Python version support and EOL timeline covering the Python release schedule, support policy, and end-of-life dates - from the Python…

Node.js Release and EOL Timeline - LTS Schedule, Active LTS and Maintenance, and End-of-Life Dates | hidekazu-konishi.com Node.js release and EOL timeline covering every major version from the io.js merge and Node.js 4 to the current lines - the LTS relea…

Java Version and LTS Timeline - Release History, the LTS Model, and Support Across Distributions | hidekazu-konishi.com A primary-source timeline of Java (JDK) releases, the move to a time-based six-month release cadence, Long-Term-Support (LTS) designati…

Open-Weights LLM Release History and Timeline - Llama, Mistral, Qwen, DeepSeek, and gpt-oss Model Families, Capability Evolution, and Licenses | hidekazu-konishi.com Open-weights LLM release history and timeline covering the major open-weights model famil…

AWS End-of-Support and EOL Reference - Lambda, EKS, RDS and Aurora, ElastiCache, and OpenSearch Service | hidekazu-konishi.com AWS End-of-Support and EOL Reference: a single-page, officially sourced reference of end-of-support, deprecation, and end-of-life

AWS Security Incident Response Playbooks - First-Response Runbooks for Common Scenarios | hidekazu-konishi.com Six first-response playbooks for common AWS security incidents - leaked IAM access keys, unintended S3 public exposure, unauthorized API activity

Protecting Your Family from Tech Support Scams and Phishing - A Practical Guide for the Family IT Helper | hidekazu-konishi.com A plain-language guide for the family IT helper on recognizing tech support scams, fake virus alerts, phishing and scam texts,…

RAG and Prompting Techniques History and Timeline - Chain-of-Thought, ReAct, RAG, and GraphRAG | hidekazu-konishi.com RAG and prompting techniques history and timeline tracing two lineages with primary sources - from few-shot prompting and Retrieval-Augme…

LLM Context Window Growth Timeline - Milestones, Current Sizes by Provider, and Official Sources | hidekazu-konishi.com An LLM context window growth timeline recording the published input context-window sizes of major models, from GPT-3's few-thousand-tok…

LLM API Parameter Compatibility Reference - Anthropic, OpenAI, Google Gemini, and Amazon Bedrock | hidekazu-konishi.com LLM API Parameter Compatibility Reference: a cross-provider map of request parameters - sampling, length and stop controls, system prom…

AWS Custom Silicon History and Timeline - Nitro System, Graviton, Inferentia, Trainium, and Introduction | hidekazu-konishi.com AWS Custom Silicon History and Timeline: a chronological reference of AWS-designed chips - the AWS Nitro System, AWS Graviton C…

AWS History and Timeline regarding AWS WAF - Overview, Functions, Features, Summary of Updates, and Introduction | hidekazu-konishi.com AWS History and Timeline regarding AWS WAF with a focus on overview, functions, features, summary of updates, and intro…

AWS History and Timeline regarding Amazon ElastiCache - Overview, Functions, Features, Summary of Updates, and Introduction | hidekazu-konishi.com AWS History and Timeline regarding Amazon ElastiCache with a focus on overview, functions, features, summary…

AWS History and Timeline regarding Amazon OpenSearch Service - Overview, Functions, Features, Summary of Updates, and Introduction | hidekazu-konishi.com AWS History and Timeline regarding Amazon OpenSearch Service with a focus on the Amazon Elasticsearch…

AWS Retired Services History and Timeline - Discontinued, Sunset, and Closed-to-New-Customer Services | hidekazu-konishi.com A respectful, fact-based record of AWS services that have been discontinued, closed to new customers, or sunset, each with its off…

Sakura Cloud Overview for Global Engineers - Services, Zones, APIs, and How It Complements Your Cloud Architecture | hidekazu-konishi.com A first, systematic English introduction to Sakura Cloud, the public cloud from SAKURA internet Inc. - its services,…

Sakura Cloud for AWS Users - Service Mapping, Terminology, and Design Differences | hidekazu-konishi.com A mapping guide to Sakura Cloud for engineers who already think in AWS terms - how Amazon EC2, Amazon VPC, Amazon S3, Elastic Load Balancing, Amazon R…

Sakura Internet History and Timeline - Hosting, Data Centers, Cloud, and AI Infrastructure Milestones | hidekazu-konishi.com Sakura Internet history and timeline covering SAKURA internet Inc.'

Sakura Internet Ishikari Data Center and Sustainable Cloud Design - Cold-Climate Cooling, Renewable Energy, and Choosing Infrastructure by Sustainability | hidekazu-konishi.com Sakura Internet Ishikari Data Center and Sustainable Cloud Design: how the com…

AWS History and Timeline regarding AWS Step Functions - Overview, Functions, Features, Summary of Updates, and Introduction | hidekazu-konishi.com AWS History and Timeline regarding AWS Step Functions with a focus on overview, functions, features, summary…

Microsoft Azure History and Timeline - Major Milestones from Windows Azure to the Present | hidekazu-konishi.com Microsoft Azure history and timeline covering the platform's major milestones from the 2008 Windows Azure announcement to the present - commer…

Google Gemini Model Release Timeline - Model Family, Capability Evolution, and Platform Availability | hidekazu-konishi.com Google Gemini model release timeline covering the Gemini model family - the Ultra, Pro, Flash, Flash-Lite, and Nano variants across…

How AWS Lambda Execution Environments Work - Firecracker MicroVMs, Lifecycle Phases, and SnapStart Internals | hidekazu-konishi.com An under-the-hood explanation of how AWS Lambda execution environments work, covering Firecracker microVM isolation, the In…

How Amazon S3 Achieves Strong Consistency and Durability - The Architecture Behind the Guarantees | hidekazu-konishi.com An under-the-hood, Level 400 look at how Amazon S3 delivers strong read-after-write consistency and eleven nines of durability, using…

AWS Organization Guardrails - Service Control Policies, Resource Control Policies, and Data Perimeter Design | hidekazu-konishi.com A Level 400 design guide to AWS Organization guardrails - how service control policies (SCPs) and resource control policies…

Event-Driven Architecture Anti-Patterns on AWS - Failure Modes, Root Causes, and How to Design Around Them | hidekazu-konishi.com A failure catalog of event-driven architecture anti-patterns on AWS - infinite event loops, ordering myths, missing idempoten…

AWS Config Rules and Conformance Packs - Compliance Detection, Automated Remediation, and Organizations Deployment | hidekazu-konishi.com A Level 300 guide to AWS Config for multi-account governance: recording scope and frequency, managed and custom rules…

AWS Backup Data Protection and Governance - Backup Plans, Vault Lock, and Cross-Account Copy Design | hidekazu-konishi.com A Level 300 guide to governing the AWS Backup foundation: backup plan and lifecycle design, Vault Lock governance and compliance mod…

Amazon Bedrock Knowledge Bases Ingestion and Isolation Patterns - Direct Ingestion, Sync Strategies, S3 Metadata Design, and Tenant Boundaries | hidekazu-konishi.com A write-side operations guide to Amazon Bedrock Knowledge Bases: direct ingestion, schedu…

LLM Inference Resilience Patterns on AWS - Retries with Backoff and Jitter, Circuit Breakers, and Stream Recovery | hidekazu-konishi.com A practical guide to client-side resilience patterns for LLM inference on AWS - classifying failures, configuring AWS…

Fine-Grained Access Control for AI Data with AWS Lake Formation - LF-Tags, Column-Level Permissions, and Cross-Account Sharing | hidekazu-konishi.com Using AWS Lake Formation to enforce column-level, row-level, and cell-level access control over AI data:…

Dynamic Model Routing and Configuration Management for Generative AI with AWS AppConfig - Feature Flags, Schema Validation, and Safe Deployments | hidekazu-konishi.com A practical guide to dynamic model routing and runtime configuration management for gen…

Amazon Bedrock Converse API Deep Dive - Unified Model Interface, Conversation State, Tool Use, and Streaming | hidekazu-konishi.com A deep dive into the Amazon Bedrock Converse API: the unified request and normalized response, conversation state, multimod…

Prompt Lifecycle Management on AWS - Amazon Bedrock Prompt Management, Versioning, and Prompt-as-Code CI/CD | hidekazu-konishi.com A practical guide to prompt lifecycle management on AWS: author, version, and govern prompts with Amazon Bedrock Prompt Mana…

Semantic Caching for LLM Applications on AWS - Embedding-Based Cache Design with OpenSearch and Similarity Thresholds | hidekazu-konishi.com An implementation guide to semantic caching for LLM applications on AWS: embedding-based cache design with Amazon…

Safe Foundation Model Rollout Strategies on AWS - Canary Traffic Shifting, Evaluation Gates, and Automated Rollback | hidekazu-konishi.com A reference architecture for rolling foundation models safely on AWS: offline Amazon Bedrock evaluation gates, canary

Amazon Bedrock Model Evaluation Practical Guide - Automatic Metrics, LLM-as-a-Judge, RAG Evaluation, and CI/CD Quality Gates | hidekazu-konishi.com A practical implementation reference for Amazon Bedrock Evaluations: job types, dataset formats, the exact…

AWS Step Functions Orchestration Patterns for Generative AI - Direct Service Integration, Parallelism, Callbacks, and Payload Limits | hidekazu-konishi.com A pattern catalog for orchestrating generative AI workflows on AWS Step Functions: the Lambda-less…

End-to-End Response Streaming Architecture for Generative AI on AWS - WebSocket APIs, Lambda Response Streaming, AppSync, and Voice Pipelines | hidekazu-konishi.com A Level 400 guide to the delivery layer for streaming generative AI responses on AWS, comp…

Amazon Bedrock Guardrails Implementation Deep Dive - Policy Types, ApplyGuardrail API, Detection Modes, and Cross-Region Guardrail Profiles | hidekazu-konishi.com A configuration and API-level reference implementation of Amazon Bedrock Guardrails, covering

PII Detection and Redaction Patterns for Generative AI on AWS - Layered Defenses with Amazon Comprehend, Bedrock Guardrails, and Macie | hidekazu-konishi.com A layered PII defense pipeline for generative AI on AWS: classify S3 data with Amazon Macie, dete…

Amazon Bedrock Security and Governance - IAM Condition Keys, SCP Design, PrivateLink, and Multi-Account Guardrail Enforcement | hidekazu-konishi.com Governing Amazon Bedrock across an AWS Organization: IAM condition keys and ABAC, SCP design, PrivateLink…

Amazon Bedrock Inference Throughput and Latency Optimization - Quotas, Provisioned Throughput, Latency-Optimized Inference, Prompt Caching, and Intelligent Prompt Routing | hidekazu-konishi.com A Level 300 guide to optimizing inference throughput and late…

Amazon Bedrock Cross-Region Inference and Data Residency Design - Geographic Inference Profiles, SCP and IAM Alignment, and Region-Contained RAG | hidekazu-konishi.com A Level 400 implementation guide to Amazon Bedrock cross-Region inference and data resi…

Vector Database Selection on AWS - OpenSearch, Aurora pgvector, MemoryDB, and S3 Vectors with Index Algorithm Internals | hidekazu-konishi.com A Level 300 guide to selecting a vector database on AWS for RAG, semantic search, and semantic caching.

Amazon Bedrock Knowledge Bases Retrieval Quality Engineering - Chunking Strategies, Hybrid Search, Metadata Filtering, Reranking, and Query Decomposition | hidekazu-konishi.com A practical, symptom-driven guide to engineering retrieval quality in Amazon B…