lasindu
I build things for the web and write down what I learn along the way.
Right now: tinkering with Next.js and writing this blog
Recent writing
All postsServerless RAG with Bedrock Knowledge Bases and S3 Vectors
How to answer questions over your own documents on AWS without running a vector database cluster.
Orchestrating AI workflows on AWS with Step Functions
When to use Step Functions, Lambda durable functions or AgentCore, with a human approval pattern you can build on.
Calling Amazon Bedrock from AWS Lambda
A practical guide to the Converse API, response streaming, IAM and the timeouts that catch people out.
Homelab
Part 16 min read
Turning an old desktop into a NAS with TrueNAS
How to check the hardware, install TrueNAS Community Edition, create a ZFS pool and share files safely across your network.
Part 27 min read
Self-hosting Immich, Pi-hole, Jellyfin and Home Assistant on TrueNAS
Docker Compose setups for photos, ad blocking, media streaming and home automation, plus private remote access with Tailscale.
Part 36 min read
Running a local LLM with Ollama and Open WebUI
How to choose a model that fits your memory, run it on almost any PC, add a chat interface and host it on a home server.
Let's talk
Working on something with AI, APIs, a homelab or home automation? Or have a question about a post? I'd like to hear about it.
you@lasindu.com