The Augmented Dev · Archive

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377 articles

Write Skew: The Anomaly Snapshot Isolation Does Not Catch

Two transactions each read what the other writes, both commit, and an invariant dies. Snapshot isolation allows write skew — here is how to close the hole.

October 11, 20267 min read

Oct 5, 20263 min read

Pass the CancellationToken or the Work Continues After the Client Left

ASP.NET Core binds CancellationToken to the aborted request. Forward it to EF Core and HttpClient, and do not turn a client disconnect into a 500.

dotnet

Oct 5, 20263 min read

Patch in Canvas Apps: The Blank Column That Overwrites a Real Value

Patch writes every column present in the change record, including blanks from empty form cards. How to update only the fields the user actually edited.

powerapps

Oct 5, 20263 min read

Daily Temperatures With a Monotonic Stack

LeetCode 739 in Python. The stack stores days still waiting for a warmer one, each index is pushed and popped once, and equal temperatures must not count.

technical-interview python

Oct 5, 20264 min read

Dataverse Cascade Delete: Parental, Restrict, and the Children You Lose

What Parental, Referential Restrict, and Remove Link actually do on delete, assign, and merge, and which preset to pick before a parent row takes its children with it.

dynamics-365-crm

Oct 5, 20263 min read

Designing a Shopping Cart: Price Snapshots, Merge, and No Inventory Hold

A cart is a per-user document, not a reservation. What to store on the line, how to merge an anonymous cart at login, and when the price is allowed to change.

system-design

Oct 5, 20263 min read

Designing Snowflake-Style IDs: Ordering, Workers, and Clock Rollback

A 64-bit id from a timestamp, a worker number, and a per-millisecond sequence. How many you can issue, why the clock must not step backwards, and why JavaScript cannot hold one.

system-design

Oct 5, 20263 min read

Indirect Prompt Injection: Tool Output Is Not Instructions

A retrieved document, an email, or a tool result can tell the model to take an action. Delimiters do not stop it. The tool allowlist after untrusted text does.

ai llm

Oct 5, 20263 min read

Kubernetes Liveness Probes That Restart a Process That Was Fine

Liveness restarts the container. Readiness pulls it out of the Service. A startup probe holds both off until the process has booted. Most outages come from using the wrong one.

devops

Oct 5, 20263 min read

Power Automate Trigger Conditions: The Run That Never Appears

A trigger condition that is false does not start a run and does not leave run history. How the expression differs from a Condition action, and how to see the skipped checks.

power-automate

Oct 5, 20263 min read

crossCompany in X++: The Query That Mixes Legal Entities

A normal select stays in the current company. crossCompany returns every legal entity the user may read. How the company container, changeCompany, and OData differ.

dynamics-365-fo

Oct 3, 20265 min read

Copilot Auto Model Selection Now Has Tiers: Efficiency, Balance, Intelligence

GitHub Copilot's Auto picker gained efficiency, balance, and intelligence tiers in September 2026, alongside GPT-6 Astra and GPT-6.1 Sol. How the tiers change the cost-quality trade, and what admins control.

ai llm

Oct 3, 20265 min read

Dataverse Filtered Record Ownership: Row-Level Security Without Owners, Teams, or Sharing

Dataverse's filtered record ownership (preview) secures rows by column values such as region or department instead of owner or business unit. How record filters, entity record filters, and security roles fit together, and what the no-owner model gives up.

powerapps

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