Daily micro-tips for C#, SQL, performance, and scalable backend engineering.
Getting “Transaction was deadlocked” errors randomly? Deadlocks happen when two transactions lock resources in opposite order. Here’s how to fix them permanently. Identify Deadlocks – System Health Session: — SQL Server automatically logs deadlocks to system_health session SELECT CAST(target_data AS XML) AS deadlock_xml FROM sys.dm_xe_session_targets st JOIN sys.dm_xe_sessions s ON s.address = st.event_session_address WHERE s.name […]
Application running slow but can’t figure out which queries are the culprits? Query Store is SQL Server’s built-in performance tracker that records everything. Enable Query Store (SQL Server 2016+): — Enable for your database ALTER DATABASE YourDatabaseName SET QUERY_STORE = ON ( OPERATION_MODE = READ_WRITE, DATA_FLUSH_INTERVAL_SECONDS = 900, INTERVAL_LENGTH_MINUTES = 60, MAX_STORAGE_SIZE_MB = 1000, QUERY_CAPTURE_MODE […]
Your .NET application’s memory usage grows infinitely? You’re probably not disposing resources properly. Here’s the complete guide. The Memory Leak – Classic Example: // WRONG: Memory leak public async Task ProcessOrdersAsync() { var dbContext = new ApplicationDbContext(); var orders = await dbContext.Orders.ToListAsync(); // Process orders… // dbContext never disposed = connection stays open = memory […]
Your .NET Docker builds take 5-10 minutes every time? Improper Dockerfile layer ordering is killing your cache efficiency. Bad Dockerfile (No Cache Optimization): FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build WORKDIR /src # This invalidates cache on EVERY code change COPY . . RUN dotnet restore RUN dotnet build -c Release RUN dotnet publish -c Release -o /app/publish […]
Is ‘git clone’ taking 10 minutes? Your repository probably has bloated history from large files that were deleted years ago but still exist in Git’s object database. Diagnose the Problem: # Check repository size du -sh .git # If this is >500MB for a code project, you have bloat # Find largest objects in Git […]
Accidentally did ‘git reset –hard’ and lost hours of work? Your commits aren’t deleted – they’re just orphaned. Here’s how to find them. The Magic Command – Reflog: git reflog This shows every HEAD movement in your repository, even deleted commits. Output looks like: a1b2c3d HEAD@{0}: reset: moving to HEAD~3 e4f5g6h HEAD@{1}: commit: Added user […]
Your AJAX calls fail randomly due to network hiccups or server load? Implement smart retry logic that actually works. The Problem with Basic Retry: // Bad: Immediate retry can make things worse function badRetry(url, maxAttempts) { for (let i = 0; i < maxAttempts; i++) { try { return await fetch(url); } catch (error) { […]
Search inputs lagging? Scroll events killing performance? Understanding debounce vs throttle is critical for responsive UIs. Debounce – Wait Until User Stops: function debounce(func, delay) { let timeoutId; return function(…args) { clearTimeout(timeoutId); timeoutId = setTimeout(() => { func.apply(this, args); }, delay); }; } // Usage: Search input const searchInput = document.getElementById(‘search’); const performSearch = debounce((query) […]
Still using Bootstrap modals or custom JavaScript? The native <dialog> element handles accessibility, focus trapping, and backdrop clicks automatically. The Complete HTML: <!– The dialog element –> <dialog id=”myModal”> <form method=”dialog”> <h2>Confirm Action</h2> <p>Are you sure you want to delete this item?</p> <div class=”actions”> <button value=”cancel”>Cancel</button> <button value=”confirm” autofocus>Delete</button> </div> </form> </dialog> <!– Trigger button […]
Page navigation feels jarring? The new CSS View Transitions API creates native app-like transitions without a single line of JavaScript. The Basic Setup: /* Enable view transitions for all navigations */ @view-transition { navigation: auto; } /* Customize the transition */ ::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0.3s; animation-timing-function: ease-in-out; } /* Fade effect */ ::view-transition-old(root) { […]
Windows taking 2-3 minutes to reach the desktop? Your startup folder is probably cluttered with apps you don’t need launching immediately. See What’s Slowing Your Boot: # PowerShell command to list all startup programs with delay impact Get-CimInstance -ClassName Win32_StartupCommand | Select-Object Name, Command, Location, User | Format-Table -AutoSize This shows every program that auto-starts, […]
Fresh Windows 11 install comes with 30+ unnecessary apps and aggressive telemetry. Here’s the nuclear option to clean it all at once. The One-Script Solution: Open PowerShell as Administrator and run: # Remove bloatware apps Get-AppxPackage -AllUsers | Where-Object { $_.Name -like “*Xbox*” -or $_.Name -like “*3DViewer*” -or $_.Name -like “*Solitaire*” -or $_.Name -like “*Spotify*” […]
Skip generic tourist traps and discover authentic local experiences with this comprehensive road trip planning prompt. The Ultimate Road Trip Planner Prompt: You are a travel planning expert with deep knowledge of hidden gems and local culture. Create a detailed road trip itinerary. **Trip Details:** – Start: [City/Location] – End: [City/Location] – Duration: [Number of […]
Stop spending hours deciphering cryptic error messages. This prompt turns stack traces into actionable debugging steps. The Master Debugging Prompt: You are a senior software engineer debugging a production issue. Analyze the following error and provide a step-by-step debugging plan. **Error Context:** Application: [e.g., ASP.NET Core Web API] Environment: [Production/Staging] Frequency: [How often does this […]
Turn scattered code comments into beautiful, structured API docs in seconds with this prompt template. The Prompt Template: You are a technical documentation expert. Analyze the following code and generate comprehensive API documentation. **Input Code:** [PASTE YOUR CODE HERE] **Output Requirements:** 1. Extract all public methods/endpoints 2. For each endpoint, document: – HTTP method and […]
Your Docker image is 1.2GB when it should be 120MB? Multi-stage builds eliminate build dependencies from your final image. The Problem – Single Stage Build: FROM node:18 WORKDIR /app COPY package*.json ./ RUN npm install # Installs 300MB of dev dependencies COPY . . RUN npm run build # Creates 10MB production build CMD [“node”, […]
Your pod crashes in 2 seconds, and logs vanish before you can read them? Here’s how to catch the output before Kubernetes deletes the container. The Problem: When a pod CrashLoops, the container exits so fast that ‘kubectl logs’ shows nothing useful or “container not found” errors. By the time you run the command, Kubernetes […]
Accidentally permanently deleted a post? If you acted within 30 days and your host hasn’t optimized the database, there’s a good chance it’s still recoverable. How WordPress “Deletes” Posts: When you empty trash, WordPress doesn’t immediately erase the post row. It updates the post_status to ‘trash’ first, then later to ‘inherit’ (for revisions). The actual […]
Getting hundreds of spam comments daily? Here’s a plugin-free solution that blocks 95% of spam bots at the server level. The Problem: Most spam bots post comments by directly hitting your wp-comments-post.php file, bypassing your website’s front-end entirely. Anti-spam plugins catch this AFTER it reaches WordPress, wasting server resources processing garbage requests. The Solution – […]
Is Photoshop stuttering on your 4K monitor while other apps run smoothly? The problem isn’t your GPU – it’s how Photoshop uses it. The Issue: Modern GPUs have multiple performance modes. Photoshop often defaults to “power saving” mode on laptops or multi-monitor setups, limiting GPU acceleration even when plugged in and running intensive edits. The […]
Tired of Photoshop forcing you into Creative Cloud save dialogs every single time? Here’s the permanent fix. The Frustration: Adobe changed the default ‘Save As’ behavior to push their cloud services. What used to be a simple Ctrl+Shift+S now opens a cloud upload dialog, adding 4-5 extra clicks to save files locally. The 3-Click Fix: […]
If your Visual Studio builds are taking forever, there’s a game-changing setting most developers miss entirely. The Problem: By default, Visual Studio uses only ONE CPU core for parallel project builds, even if you have 8, 16, or more cores available. This bottleneck can turn a 30-second build into a 2-minute nightmare. The Solution: Tools […]
Exceptions are control-flow bombs. Cost Stack trace capture Heap allocations Cache pollution Rule Exceptions = exceptional cases. Alternative if (!TryParse(value, out result)) { // handle } Cause → Effect Using exceptions as logic → invisible performance debt.
Records are great.Until you overuse them. Why Value-based equality Copy semantics More allocations in loops Rule Use records for: DTOs Messages Boundaries Avoid in: Hot loops Performance-critical paths
Async ≠ non-blocking by default. The trap await Task.Run(() => LongCpuWork()); You just moved blocking to the thread pool. Rule Async is for I/O, not CPU. Correct Use async APIs for I/OUse background workers for CPU
It’s not the count.It’s locking + metadata access. Reality COUNT must respect: Isolation level Pending writes Allocation metadata Production alternative Use approximate counts for dashboards. Why Accuracy isn’t always worth blocking.
The index is fine.The predicate is not. Example WHERE YEAR(OrderDate) = 2024 Why it fails Functions on columns prevent index seeks. Rewrite WHERE OrderDate >= ‘2024-01-01’ AND OrderDate < ‘2025-01-01’ Cause → Effect Function → scan → CPU spike → slow queries.
Most people think it magically fixes everything. Reality Misusing named clients causes: DNS caching issues Handler lifetime misuse Hidden fix Use typed clients for long-lived services. Why Typed clients scope handlers correctly to the service lifetime.
Looks fine locally.Stops running in prod. Root cause Unhandled exceptions inside ExecuteAsync. What actually happens The host kills the service quietly. Correct pattern protected override async Task ExecuteAsync(CancellationToken ct) { while (!ct.IsCancellationRequested) { try { await DoWork(ct); } catch (Exception ex) { logger.LogError(ex, “Background task failed”); await Task.Delay(5000, ct); } } } Cause → Effect […]
Big commits don’t just slow reviews. Real damage Breaks git bisect Makes rollback risky Hides causal relationships Rule One commit = one reason. Mental model If you can’t describe the commit in one sentence, it’s too big.