Why you should use microservices

Find out how large and small enterprises are using microservices to continuously modify, scale, and update their apps for changing business needs

Why you should use microservices

So you’re sitting on hundreds of thousands of lines of legacy C++. Oh, who are we trying to kid? It’s millions of lines of Vectran, a short-lived Fortran variant created by IBM in the ’70s. But hey, if it ain’t broke, right?

Except it is broken. Anytime someone tries to add a feature, the thing breaks. Even trying to fix bugs creates more bugs. But if you just don’t touch it, it keeps on working.

The problem is that innovation demands agility and velocity. All the cool companies that never had to worry about Y2K are outpacing your clunky old legacy software. Investors are demanding the next big thing. Customers are jumping ship in droves.

The good news is that you’re not alone. Believe it or not, even the cool kids have faced similar problems. Netflix, eBay, Amazon, Twitter, PayPal, and more didn’t start out with beautifully architected scalable code that was fast and agile.

In 2006, eBay did a presentation at the SD Forum [PDF] about its architecture. The company confessed to having built a monolithic 3.3-million-line C++ ISAPI DLL that compiled into a 150MB binary. eBay developers were hitting compiler limits on the number of methods per class, while being expected to add more 1,200 new features per year with 99.94 percent availability.

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