Gain insights into software design patterns and architecture in C++. Learn about C++ idioms, concurrency patterns, and apply the right solutions to improve code quality and productivity.

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Software engineering researchers and practitioners noticed that parts of software projects could often be solved using approaches that were discovered earlier to solve similar problems. This led to the documentation of software design and architectural patterns, which are known solution approaches to a class of problems. 

This course starts by putting software patterns into perspective by answering the question, “What is a software pattern, and how is it different from an algorithm?” You will then learn about the two classes of patterns—software design and architecture patterns. Next, you’ll learn common C++ idioms. Finally, you will learn about software patterns for concurrency. 

By the end of the course, you will have useful and practical tools to improve the quality of your code and productivity. You’ll also be able to analyze a given part of your software project, pick the right pattern for the job, and apply it.

Master Software Design Patterns and Architecture in C++

# Overview
Suppose that we have a very sensitive object, and we don't want the client to access it directly. Or, we have an object that is very expensive to create. We certainly want to limit access to the objects in these cases. This is where we would use the proxy pattern. 

In the proxy pattern, we introduce a middleman (surrogate) that will interact with the real object. Through this proxy (surrogate), we can limit access to the original object. It will also help us hide the detail of the real objects from the client. 

# Type
The proxy is a design pattern from software development that belongs to the category of structural patterns.

# Purpose

It provides a placeholder for another object to control access to it.



# Also known as

The proxy pattern is also known as a **surrogate**.

# Applicability 

The proxy pattern can be used through multiple methods, but here are a few of the most important:

* **Virtual proxy:** This type of proxy is used when we need to deal with a resource-intensive object. Through the virtual proxy, we'll only initialize the object when we need it. 

* **Protection proxy:** This proxy is used when we want to only give access to authorized clients. The proxy will only allow authorized access to a protected object.

* **Remote proxy:** This proxy provides a local representative for an object that lies remotely.
# Structure 


Learn about the proxy pattern, its purpose, applicability, and structure, as well as related design patterns.

Introduction

Introduction to Design Patterns

Deep Dive into Design Patterns

More Design Patterns

Idioms

Architectural Patterns

Patterns for Concurrency

Conclusion

Proxy Design Pattern

Overview