Even in managed code. Why it happensUnsubscribed event handlers. FixAlways unsubscribe or use weak events.
Day: January 1, 2026
DateTime.Now Can Break Distributed Systems
Time is harder than it looks. Why it happensTime zones + daylight saving. FixUse DateTimeOffset.UtcNow.
C# Value Types Copied More Than You Think
Structs aren’t always faster. Why it happensLarge structs passed by value. FixUse in parameters.
SQL COUNT(*) Isn’t Always Cheap
Especially on large tables. Why it happensFull scan required. TipUse metadata counts when possible.
SQL Queries Slow Down After Data Grows
Same query, worse performance. Why it happensMissing covering indexes. FixInclude frequently selected columns.
Configuration Values Change Between Environments
Works locally, breaks in prod. Why it happensConfiguration providers load order. FixLog final configuration on startup.
ASP.NET Core Requests Hang Randomly
CPU low, threads exhausted. Why it happensBlocking calls inside async pipeline. FixRemove .Result and .Wait().
Git History Looks Clean But Lies
Squash merges hide context. Why it mattersDebugging regressions becomes harder. TipAvoid squashing critical feature branches.
Git Merge Conflicts Appear “Out of Nowhere”
Nothing changed… or did it? Why it happensLine-ending normalization (CRLF vs LF). FixConfigure .gitattributes.
AJAX Requests Work Locally But Fail in Production
No errors, no data. Why it happensCORS preflight blocked by server config. FixAllow OPTIONS requests explicitly.
JavaScript forEach Can’t Be awaited
Silent async bugs everywhere. Why it happensforEach ignores promises. FixUse for…of or Promise.all.
HTML5 Forms Submitting Twice
Looks like a JS bug — often isn’t. Why it happensButton defaults to type=”submit”. FixAlways declare button types explicitly.
CSS position: sticky Not Working?
It’s not broken — it’s constrained. Why it happensParent container has overflow: hidden. FixRemove overflow or move sticky element.
Bluetooth Audio Sounds “Bad” Randomly
Sudden quality drop mid-call. Why it happensHands-Free profile overrides stereo mode. FixDisable Hands-Free Telephony in device settings.
Windows 11 Laptop Battery Drains While Idle
No apps open, battery dying. Why it happensBackground apps + wake timers. FixDisable unnecessary startup tasks + check powercfg wake sources.
AI Prompt — Decision Making Under Uncertainty
Useful for everyone, not just developers. Prompt Help me make a decision. List: – Best case – Worst case – Hidden risks – Opportunity cost Decision: <DESCRIBE SITUATION>
AI Prompt — Safe Refactoring Without Side Effects
Prompt Refactor this code. Rules: – No behavior change – No public API changes – Explain WHY each change is safe Code: <PASTE CODE>
AI Prompt — Find Hidden Performance Bottlenecks
Prompt Act as a senior performance engineer. Analyze the following code. Identify: – Hidden allocations – Blocking calls – Thread pool starvation risks Suggest fixes with reasoning. Code: <PASTE CODE>
Docker Build Is Slow Even With Cache
You changed one line… everything rebuilt. Why it happensCOPY instructions invalidate layers. FixCopy dependency files first, source files last.
Kubernetes Pod Restarts With No Error Logs
Looks healthy… until it isn’t. Why it happensThe container is killed before logging (OOMKill). How to confirmCheck pod events, not container logs.
WordPress Login Keeps Failing Behind Cloudflare
Correct password, endless redirects. Why it happensX-Forwarded-Proto header missing → HTTPS confusion. FixForce SSL detection in wp-config.php.
WordPress Suddenly Gets Slow After “Just One Plugin”
Classic WordPress horror story. Why it happensPlugins hook into init and wp_loaded, running on every request. Life-saving moveDisable plugins one by one while profiling (Query Monitor).
Photoshop Slows Down Over Time Without Crashing
No errors, no warnings — just pain. Root causeHistory states and hidden smart objects silently eat RAM. FixLower History States + periodically rasterize unused layers.
Photoshop Export Looks Different on Every Screen
Your design looks perfect… except everywhere else. Why it happensWide-gamut monitors + unmanaged color profiles = visual chaos. FixConvert image to sRGB IEC61966-2.1 before export.
Visual Studio Runs Fine… Until You Attach Debugger
Ever noticed your app slowing down only when debugging? Why it happensThe debugger disables certain JIT optimizations and adds tracking hooks. Why it mattersPerformance bugs may disappear in Release but appear in Debug — or vice versa. Life-saving tipAlways reproduce performance issues using Release + Attach to Process.