Jitbit Blogs

How I learned to stop worrying and wrote my own memory-cache

In my ongoing quest for performance optimization, I, a self-proclaimed performance enthusiast, spend considerable time analyzing bottlenecks in our SaaS helpdesk web app. Proudly, our backend seldom exceeds 5-6% CPU usage, even during peak hours when the Americas awaken and Europe remains active.

How to Hide Tethering from Your Mobile Operator

TLDR:

Use a secure VPN to prevent DPI
On your laptop, change packet TTL to 65 (iOS default 64 plus one).

Improving C# Performance with Span<T>

Whenever I have some free time on my hands I love making our helpdesk app faster. The newest C# and .NET Core releases come with so many performance oriented features that I've been waiting to play with, specifically the new datatype called Span<T>.

SQL is the most long lasting skill in tech

In January 2020, right before COVID hit, a question has popped up at the HackerNews front page:

"Which technology is worth learning in 2020?"

Cross-Post: Migrating a 1TB database from Win to Linux with no downtime

For those of you who don't follow our company blog, we've just published another "tech porn" story on migrating a huge database from Linux to Windows with no downtime. Check it out.

Speeding up a huge multi-tenant SaaS database

Here's a little story of how we sped up our SaaS backend with a one-liner magic silver bullet

Reasons NOT to upgrade ASP.NET to ASP.NET Core (but you will have to anyway)

I know, I know, .NET Core is the future of .NET, and "cross-platform blah-blah", and "high-performance and scalable blah-blah", and also "microservices!!! containers!!!" etc. Even more - I understand that's it's inevitable. But still. Consider this an angry post on what's wrong with upgrading from ASP.NET Framework to ASP.NET Core:

System.Drawing vs SkiaSharp benchmark

This is a ridiculously short post for .NET devs looking to compare System.Drawing with SkiaSharp (the fastest open-source alternative).

What selling to Enterprises REALLY looks like

BIGTECH: Hello, we would like to buy an on-premise version of your software.

ME: Oh! Cool, here is the payment link

Generating product ideas - mixing vertical and horizontal

Generating product ideas via meshing or "multiplying" two existing products into one - is a popular creativity exercise. They even teach this at Stanford, at the product innovation course. But as with all techniques - it's tricky.

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