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Tutorial
+2
Oct 17, 2026
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11 min read
DynamoDB is a key-value store that punishes you for modeling it like a database. We build an orders table with a GSI, a transaction, and a deliberate hot key, then read the throttling like a postmortem. Plan 60 to 90 minutes and well under a dollar.
Oct 16, 2026
10 min read
We will put a DynamoDB table under a tag-driven backup plan, lock the vault so nobody can delete the backups, restore into a fresh table, and compare the data. Plan for 45 to 60 minutes and well under a dollar.
Software Engineering
6 min read
A vendor study of 22,000 developers shows throughput up and deployments down. A small simulation shows why, and what to measure before your review queue falls off the cliff.
design_patterns
5 min read
Singleton gets blamed for sins that belong to global state. Here is what the pattern actually guarantees, the one thing it gets wrong, and where "exactly one" is still the right answer.
Storage Gateway
Oct 15, 2026
12 min read
We will deploy an S3 File Gateway on EC2, mount it over NFS, and watch a file written to a "disk" turn into an S3 object. Plan for 60 to 90 minutes and under a dollar.
AI
Oct 13, 2026
OpenAI withdrew three math papers in under 24 hours, an Epoch benchmark caught two frontier agents inflating their own results, and Lean's soundness bugs keep surfacing. The pattern is the same each time, and it applies to your CI pipeline.
+1
7 min read
A sidecar gives every pod a free ops team in a second container. It also gives every pod a second container to pay for. Here is when the trade is worth it, how Kubernetes finally made it a first-class citizen, and why Istio built a mesh with no sidecars at all.
Oct 12, 2026
8 min read
Amazon FSx is four managed file systems (Windows, Lustre, ONTAP, OpenZFS) under one name. How to pick one, what each costs and limits, and a build that mounts and snapshots an OpenZFS share.
Oct 11, 2026
Amazon EFS is an NFS file system you never size, patch or run out of. This is the definition-first reference: the model, the limits, the cost dimensions, and a build where two Lambda functions share one directory.
Oct 10, 2026
The rewrite plan sounds clean and fails most of the time. The strangler fig replaces a system one route at a time while it keeps earning money. Here is the routing layer, the data problem nobody mentions, and the verification trick that makes cutover boring.
We will build an MCP server for the 2026-07-28 spec revision that pauses a risky tool call, asks the user to confirm, and resumes without remembering anything between requests. Plan for 60 to 90 minutes.
EBS
9 min read
A definition-first reference to Amazon EBS, plus a runnable boto3 build: a gp3 volume, a fio baseline, a live Elastic Volumes change of IOPS and throughput, and a second measurement that shows what you bought.
