Editor's note
I curated a fairly mixed issue today: cloud security, UI behavior, data stores, and some hard-won performance lessons. The Cosmos DB Entra ID post and the ASP.NET Core client assertions article stood out to me because they both tighten real production security without hand-waving. I also liked the Blazor EventCallback piece and the string-performance writeup for the same reason: they explain bugs you only remember after they’ve cost you time.
Cosmos DB Entra ID, AI agents, and .NET performance
Jasen Fici
February 09, 2026
In partnership with
Free, private email that puts your privacy first
A private inbox doesn’t have to come with a price tag—or a catch. Proton Mail’s free plan gives you the privacy and security you expect, without selling your data or showing you ads.
Built by scientists and privacy advocates, Proton Mail uses end-to-end encryption to keep your conversations secure. No scanning. No targeting. No creepy promotions.
With Proton, you’re not the product — you’re in control.
Start for free. Upgrade anytime. Stay private always.
Enjoying the newsletter? Your feedback helps us grow and reach more developers.
Today's Articles
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Jasen's take on today's picks
How to Enable Microsoft Entra ID for Azure Cosmos DB (NoSQL)
Entra ID for Cosmos DB is a practical step away from shared keys and toward cleaner production security.
🔴 VS Code Live - AI-Powered Kafka Development: Confluent Extension + GitHub Copilot + MCP
The Blazor EventCallback article is a useful reminder that UI event patterns matter once async code meets component lifecycles.
.NET R&D Digest (January, 2026)
The string-search performance piece is the kind of focused tuning advice that saves real CPU in busy apps.
GC Didn’t Save Me: How I Leaked Resources Even Though .NET Has Garbage Collection
CQRS with .NET 10 is pragmatic rather than academic, which makes it easier to apply in systems with real business rules.
Why I Combined Redis Pub/Sub with In-Memory Cache (Instead of Just Moving Everything to Redis)
The durable AI agents article is interesting because orchestration, not just generation, is where AI systems start to resemble software architecture.