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[Coding Droplets @codingdroplets]

Your .Skip().Take() pagination isn't constant-time.

The DB processes every row it skips. It can also skip/duplicate rows if data changes mid-paging.

Fix: Keyset Pagination → WHERE Id > lastId.

#dotnet #aspnetcore #efcore

[Coding Droplets @codingdroplets]

JWTs are stateless - the server only checks signature + expiry. It never asks "did this user log out?"
So a token copied before logout keeps working until it expires.
Fix: short-lived access tokens + a revocable refresh token.

👉 https://t.co/Er6bS0Re5c

#dotnet #aspnetcore #jwt

[Coding Droplets @codingdroplets]

The Dependency Rule for Clean Architecture:
→ Dependencies flow INWARD
→ Interfaces live where they're USED, not where they're IMPLEMENTED
→ Domain knows nothing

👉 https://t.co/Er6bS0RLUK

#dotnet #csharp #aspnetcore #cleanarchitecture #softwarearchitecture #webapi

[Coding Droplets @codingdroplets]

async void is "Fire & Forget".
Exceptions in async void skip your try/catch AND your global middleware, then take down the whole app.
Use it for event handlers only. Everywhere else: async Task.

👉 https://t.co/Er6bS0Re5c

#dotnet #csharp #aspnetcore #webdev

[Coding Droplets @codingdroplets]

That ASP NET Core 400 you can't reproduce?

[ApiController] validates the model before your action. Wrong type, bad JSON, missing [Required] → instant 400. Breakpoints skipped.
Read the errors dictionary, not the controller.

https://t.co/Er6bS0RLUK

#aspnetcore #dotnet

[Coding Droplets @codingdroplets]

async didn't make your EF Core code faster.
SaveChangesAsync() inside a loop = 1 DB round-trip per row. Move it outside → 1 trip.
async = non-blocking. batching = fast.
https://t.co/Er6bS0Re5c

#dotnet #efcore

[Coding Droplets @codingdroplets]

Your ASP NET Core API running in Docker is not automatically production-safe.
If you never set a non-root user, your app may be running as root inside the container.

👉 https://t.co/Er6bS0RLUK

#ASPNETCore #Docker #DevOps #DotNet

[Coding Droplets @codingdroplets]

The Hybrid Pattern 🚀
Use EF Core for Writes (Safety/Validation).
Use Dapper for Reads (Speed/DTOs).

https://t.co/9mhBDMpmVM

#DotNet #WebDev #Performance #SoftwareEngineering

[Coding Droplets @codingdroplets]

If a service is drowning, don't throw it more lead. Use exponential backoff + jitter, or better yet, open the Circuit Breaker and fail fast.
Production-ready patterns here: https://t.co/Er6bS0RLUK

#Coding #Architecture #Backend #DistSys

[Coding Droplets @codingdroplets]

If your Background Job doesn't use a Distributed Lock, it isn't "Production-Ready".
👉 https://t.co/Er6bS0RLUK

#Programming #DotNet #CloudNative #Backend

[Coding Droplets @codingdroplets]

Custom logging middleware is the #1 cause of "Mystery" OOM exceptions in new APIs.
If you're calling EnableBuffering() globally, you're not "logging" - You're hoarding RAM.
https://t.co/Er6bS0RLUK

#Programming #Scalability #Backend #WebDev

[Coding Droplets @codingdroplets]

If your POST endpoint doesn't support Idempotency Keys, it’s not production-ready.
A simple network hiccup shouldn't result in a double-charge for your users. Resilience > "Happy Path" logic.
https://t.co/Er6bS0Re5c

#BuildInPublic #BackendDev #SystemDesign #Programming

[Coding Droplets @codingdroplets]

Rate Limiting by IP is often Lazy Engineering that punishes legitimate users.
It blocks 50 people share an office NAT.
Identity-based partitioning (User ID/API Key) is the best option.
👉https://t.co/Er6bS0RLUK

#SystemDesign #WebAPI #CloudComputing #Backend

[Coding Droplets @codingdroplets]

If you aren't passing CancellationToken to your EF Core queries, your API isn't actually "Production-Ready".

More production-level insights here: https://t.co/Er6bS0Re5c

#dotnet #csharp #backend #performance

[Coding Droplets @codingdroplets]

Default EF Core behavior is a trap for read-only APIs. 🪤
https://t.co/Er6bS0RLUK

The Fix? .AsNoTracking()

Leaner. Faster. Production-ready.

#dotnet #csharp #webdev #performance

[Coding Droplets @codingdroplets]

If your https://t.co/PE1O9upu39 Core middleware uses .Result or .Wait(), you don’t have an async pipeline.

The full list of 7 common mistakes and their fixes: https://t.co/YbCql6vSce

#dotnet #csharp #webapi #backend

[Coding Droplets @codingdroplets]

Caching without Locking isn't an Optimization. It's a Vulnerability. 🚩
If your API crashes the moment a high-traffic cache key expires, you've been hit by a Cache Stampede.
Use SemaphoreSlim or HybridCache.
https://t.co/Er6bS0RLUK

#DotNet #Architecture #Backend #CSharp

[Coding Droplets @codingdroplets]

Following the IDisposable pattern for HttpClient is the fastest way to crash a high-traffic .NET API. 🧨
Use IHttpClientFactory instead.

Learn more: https://t.co/Er6bS0RLUK

#DotNet #CSharp #Programming #WebDev

[Coding Droplets @codingdroplets]

Contrarian Take: "Clean Code" often kills performance.
👉 https://t.co/Er6bS0RLUK

Many devs use IEnumerable in their repository interfaces because it feels "Decoupled".

Reality: You’re just forcing your API to download the entire DB table into RAM before filtering.

[Coding Droplets @codingdroplets]

Your API isn’t Slow. It’s Unprotected.
No Rate Limiting = Unlimited Load = Guaranteed Failure.
Start treating rate limiting as a core layer, not an optional feature.

https://t.co/Er6bS0Re5c

#dotnet #webapi