Microsoft

Signing Android App in Xamarin

Just got my code signing cert from Digicert and I thought of signing my Android app to publish on Playstore, but there was this weird error

jarsigner error: java.security.SignatureException: private key algorithm is not compatible with signature…

Health Monitoring Pattern — Azure Cloud Design

To ensure high availability, a regular health check is always a good idea. All you need to do is to periodically request the application endpoint and analyze the response for response time, return code and response content.

Load Levelling Queue Pattern — Azure Cloud Design

On a ticket counter, what happens when several people try to buy tickets and there is no order? CHAOS! We have seen this at movie theatres on first-day-first-shows, at railway reservations in festive seasons, flight counters when flights are…

Throttling Pattern — Azure Cloud Design

Remember those college days discussions on why one should upgrade to a 1.2 GHz processor when most of the time CPU is idle? Well, it was not an average case problem, it was for the times when system is loaded and that extra bit of processing can help you…

Availability — Cloud Design Pattern

Gone are the days when people who don’t understand technology knew what it means by “Server down”. We have become used-to uninterrupted services. Even a small lag raises eyebrows now.

Xamarin, Sharing is Good

Xamarin saves a lot of programming, testing and maintenance effort by using a shared codebase. You write code, find bugs and fix them, just Once, not the number of platforms that you are supporting. Although we do have some platform specific code like the native UI code or the…

Cross Platform Mobile App Development With Xamarin

It is a time when we are more connected than ever. Every tiny bit of information is reaching us through various digital sources. If we look around, we are tied to several devices which are now acting as our extended sensory. Of them, mobile…

CreateFile() returns ERROR_ACCESS_DENIED opening a device

“I would write a driver that creates a WDF device object. I would then open this device from user-mode and send custom IO control requests” — A typical user-kernel communication scenario.

Phone App To Help Remember Face

Sanjay Singhania has to go through a lot of pain remembering people in Ghajini movie, I published a…