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2026-03-052026-03-05

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Production RAG in six stages
Production RAG in six stages
A practical walkthrough of a production-ready RAG query workflow: query transformation, hybrid lexical and semantic retrieval, reciprocal rank fusion, cross-encoder reranking, neighbor expansion, synthesis, observability, and RAG-Fusion tradeoffs.
2026-06-072026-06-07
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Why LLMs without tool calling capability can call tools?
Why LLMs without tool calling capability can call tools?
Tool calling isn't really a model capability — it's a runtime loop: inject a prompt, detect a pattern, stop generation, run the tool. This article walks through both the native (provider-owned) and prompt-only paths, shows concrete examples for each, and explains why fine-tuning has blurred the line between them.
2026-05-062026-05-17
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How to Draw and Paint Leather Shoes ｜ How to Express Leather Texture
How to Draw and Paint Leather Shoes ｜ How to Express Leather Texture
A practical guide to painting leather shoes with a glossy sheen. We walk through anchor highlights → bounce light → shadows → finishing, with tips on when to use Add (Glow) vs Multiply and how to handle diffuse reflection. Includes Mary Jane examples so you can consistently capture texture and volume.
2025-11-082025-11-08
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How to use Amazon Bedrock models with Open WebUI
How to use Amazon Bedrock models with Open WebUI
This article explains how to use Amazon Bedrock models with Open WebUI. Open WebUI is an LLM chat application UI, and with Amazon Bedrock you can use the APIs without writing code. We walk through required settings and how to launch with docker‑compose, and show how to invoke different models easily.
2025-08-272025-08-27
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How to receive email with Amazon SES and store it in S3
How to receive email with Amazon SES and store it in S3
This guide shows how to receive email with Amazon SES and store it in S3. The setup is simple: create a domain identity, prepare an S3 bucket, configure a receipt rule, and add an MX record in DNS. We also cover how to verify that messages are received successfully.
2025-08-092025-08-09
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Best practices for securely assuming AWS IAM roles from GitHub Actions
Best practices for securely assuming AWS IAM roles from GitHub Actions
This article explains how to securely assume AWS IAM roles from GitHub Actions to access AWS resources. Using OpenID Connect (OIDC) strengthens security and removes the need to manage long‑lived credentials. Step-by-step guidance, benefits, and implementation examples help you build a robust CI/CD setup.
2025-08-082025-08-26
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An easy way to deploy a regular application to AWS Lambda
An easy way to deploy a regular application to AWS Lambda
This article explains an easy way to deploy applications to AWS Lambda. Using aws-lambda-web-adapter, you can deploy server‑capable applications with minimal changes. We include a FastAPI example and touch on handling non‑HTTP events, with deployment steps and architecture diagrams.
2025-08-062025-08-29
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Blazing-fast deploys and runtime: Nitro, the recommended Node.js web server runtime for AWS Lambda
Blazing-fast deploys and runtime: Nitro, the recommended Node.js web server runtime for AWS Lambda
This article introduces Nitro, a Node.js web server runtime for AWS Lambda that delivers blazing-fast deploys and execution. Nitro is a flexible web framework that targets many platforms without code changes. With compiler macros you can define routes easily and generate optimal artifacts for serverless targets like AWS Lambda. Its lightweight, optimized design also makes it smooth to build enterprise-grade web servers. We also cover how to deploy to AWS Lambda and implement response streaming.
2025-07-182025-07-18
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Create a GraphQL API on AWS Lambda with Rust
Create a GraphQL API on AWS Lambda with Rust
This article explains how to build a GraphQL API in Rust on AWS Lambda. It walks through creating the Lambda function, local testing, implementing the GraphQL API, and deploying, so developers can work efficiently. Leverage modern techniques to build a scalable, environmentally conscious API.
2024-08-102024-08-22
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Profile IconIkuma Yamashita

I like Rust. For work, I'm an infrastructure engineer, and as a hobby, I'm an application engineer. I enjoy drawing illustrations and other creative pursuits.