(With its concise, efficient and powerful standard library, built-in concurrency at the language level, cross platform compilation and other advantages, go has become the most competitive programming language in the field of infrastructure and cloud services in the era of cloud computing. Tencent, byte beating and many other large companies have migrated the original C / C + +, Python and PHP Technology stack to go language. For developers and technicians, mastering go language is not only a stepping stone to enter big factories, but also a necessary choice to improve personal competitiveness in the workplace.)