PostgreSQL Query Rewriting Techniques The previous articles in this series covered performance problems you fix by adding indexes, restructuring joins, or tuning memory. This one is about the queries where the plan is "fine" — every node is doing something reasonable — but the query itself is asking the wrong question, producing unnecessarily large intermediate results or forcing the planner dow
What do you need for UCP? There are two levels of UCP readiness. The first is the minimum viable manifest — the bare requirements to pass validation and appear in the UCP directory. The second is the agent-ready setup — what it actually takes for an AI agent to browse, cart, and check out at your store without friction. Think of this as your UCP checklist — the minimum requirements plus the recomm
How I Built a Bitcoin-Only Digital Store (No Stripe, No PayPal) What happened when I deleted my payment processor and embraced financial sovereignty I still remember the day Stripe froze my account. A client disputed a $200 payment and before I could even respond, my entire balance was locked. Three weeks of emails. Two verification requests. And ultimately, a 30-day hold while they "investigate
SQL is widely known for data querying and manipulation but systems do grow; data becomes larger; processes become repetitive and operations become sensitive. SQL has some features which enables it to be considered a fully fledged programming language. Some of the features which I discuss in this article are procedures, functions and transactions. Each of these concepts serve distinct purposes. Sto
Hi 👋, In this post we shall explore Bedrock's structured KB with this architecture: Upload CSVs to S3 > SNS Queue > Crawl data with Glue > Query with Redshift > Bedrock KB > Query with LLM. Let's do some of this with code. Let's get started. Clone the repo and switch to the project directory. git clone [email protected]:networkandcode/networkandcode.github.io.git cd structured-kb-demo/ Do a uv sync
"OK, I understand the RPS formula. But is our RPS — actually — high or low compared to our industry?" Right after I published the RPS-definition guide last week, this was the most common question I got back from EC operators. They want to know where they sit, not just how to compute the number. Knowing your RPS is $1.20 means nothing if you don't know whether that's the industry median, the top qu
I run a flower shop in Munich and recently migrated my entire e-commerce setup to Medusa v2. The shop, the One thing that was completely missing: a connection to Lexware Office, which is the most popular accounting software So I built LexBridge - an open-source Medusa v2 plugin that automates the entire invoicing workflow. What it does When a customer places an order, the plugin: Looks up the cust
Subqueries vs. CTEs in SQL: A Practical Guide to Writing Cleaner, Smarter Queries Whether you're just getting comfortable with SQL or leveling up your data skills, two tools will come up again and again when working with complex queries: subqueries and Common Table Expressions (CTEs). They solve similar problems — breaking a complex query into manageable pieces — but they do it in different ways