Added Designing Elixir Systems with OTP to Learning (#1250)

Author: tylerbarker

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@@ -214,3 +214,12 @@ Write code that writes code with Elixir macros. Macros make metaprogramming poss
 This book intends to be a little guide about how to be the Erlang medic in a time of war. It is first and foremost a collection of tips and tricks to help understand where failures come from, and a dictionary of different code snippets and practices that helped developers debug production systems that were built in Erlang.
 
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+<h4 class="resource">Designing Elixir Systems with OTP</h4>
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+<a class="cover" href="https://pragprog.com/book/cmelixir/metaprogramming-elixir" title="Designing Elixir Systems with OTP: Write Highly Scalable, Self-Healing Software with Layers
+– by James Edward Gray, II and Bruce A. Tate"><img src="/images/learning/designing-elixir-systems.jpg" alt="Designing Elixir Systems with OTP cover" width="190" /></a>
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+You know how to code in Elixir; now learn to think in it. Learn to design libraries with intelligent layers that shape the right data structures, flow from one function into the next, and present the right APIs. Embrace the same OTP that’s kept our telephone systems reliable and fast for over 30 years. Move beyond understanding the OTP functions to knowing what’s happening under the hood, and why that matters. Using that knowledge, instinctively know how to design systems that deliver fast and resilient services to your users, all with an Elixir focus.
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