Why use Go for web development?
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This document discusses the suitability of Go for web development. It notes that while Go's built-in HTML template engine is basic, the Gorazor template engine provides a more powerful way to mix Go code into HTML templates. Code generation approaches also allow Go to behave more dynamically at runtime. Go's fast compilation and use of interfaces make it well-suited for dynamic web applications and large websites. The document concludes that while other languages may be more mature, Go is suitable for developing large, stable, scalable websites that need to be maintained over time.
![• Generate all these methods:
• NewXXXObjByID(namespace, classname, id string)
• ReadForm(params map[string]string)
• So, 600k LoC](https://image.slidesharecdn.com/goforweben-150105021001-conversion-gate02/85/Why-use-Go-for-web-development-34-320.jpg)
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Why use Go for web development?
- 1. Why use Go for Web development? Weng Wei, July 2014
- 2. About Go
- 3. –Rob Pike “Go is a programming language designed by Google to help solve Google's (big)problems. ”
- 4. –Derek Collison “ Go will become the dominant language for systems work in IaaS, Orchestration, and PaaS in 24 months.”
- 5. Go looks cool！ but, it is suitable for simple web development?
- 6. Web? Use MVC！ • Quite a number of Go MVC web framework exist: • Beego / Martini / Revel…. • Different approach for MC layers • V layer are mostly the same: Go HTML Template http://golang.org/ pkg/html/template/
- 7. @yinwang0：Go HTML Template • “Basically usable” template engine • Surprisingly, logic control code in template are not Go itself • Poor expressiveness • Need to bind all template data into a single model • Helper func need to be “registerd” • Quite messy & tedious
- 8. –Wang Yin “It’s better to build website with more mature frameworks from other language”
- 9. Template engine must be good for web development!
- 10. – Wikipedia “PHP(PHP: Hypertext Preprocessor)…server-side scripting language designed for web development.. PHP code can be simply mixed with HTML code..”
- 11. Mix html with Go?
- 12. • “Not possible, Go doesn’t have interpreter” • “Go is NOT script”
- 13. I think otherwise • Go is turing complete • No things Go can’t go • Only thing more complicated to do with Go • Embedding static compile language in HTML are possible: • ASP.Net
- 15. Razor • Default template/view engine for ASP.NET MVC • Support embedding c# / vb.net in HTML • .Net developers love it (including me): • http://www.zhihu.com/question/19973649 (Chinese link)
- 16. How complicated to create GoRazor?
- 17. GoRazor • http://github.com/sipin/gorazor • PoC in one night • Continuous team improvement：214 commits • Proven with internal large web project
- 19. • Mature template engine; sublime plug-ins for syntax highlight + auto complete • Able use Go directly in template; no different syntax for flow control • Powerful expressiveness • Rendering template is calling function; models are function parameters • No need to register helper func, directly import in template • Very concise & convinient
- 20. Demo
- 21. • If you think Go is not suitable for web development because of poor template engine • Please try https://github.com/sipin/gorazor
- 22. Of cause, template engine is only the start
- 23. Is Go suitable for dynamic web development？
- 24. Dynamic • web is built around string • Go is static compiled; can it： • Obtain object properties via string? • Invoke package/object methods via string? • Create object via string?
- 25. Reflection • Reflection could meet most of the requirements • Check Martini
- 26. Issues with Go’s reflection • Let’s put performance aside • Tedious & complicated • Move compilation error to runtime error: no complier check
- 27. Reflection is not the only way
- 29. For example • Bind HTTP Post form values to object
- 34. • Generate all these methods: • NewXXXObjByID(namespace, classname, id string) • ReadForm(params map[string]string) • So, 600k LoC
- 35. • Code generation makes static compiled language feels “dynamic” • Go can do this, so does all other languages • But, how about the compilation speed?
- 36. Full Compliation
- 37. Incremental compilation after editing template
- 38. • Go’s compilation speed is amazing! • This is a project with 600k LoC on Mid 2011 Macbook Air • We could keep cmd + s / cmd + tab / cmd + R development pace
- 39. Back to dynamic • If complication is slow, then code-gen approach hurts produtivity • Go compile extreme fast • Go has unique point for dynamic
- 40. – Rob Pike “interfaces.. the true Go philosophy…”
- 41. Go’s interface • Define class/method first • May define interface later • Interface query at run-time
- 42. Example • Check if object has “GetUserID” method • If so, check if current user • If so, allow edit
- 44. More example • Check if object has “IsDistributed”、“GetPersistentNode” methods • If so, replicate object to other nodes
- 49. • Go allow querying original object’s interface • Switch between different interfaces at runtime • Interface could be defined in new packages • No need to put all interface combinations for different purpose at one place
- 50. However, why reinventing the web MVC wheel?
- 51. But！ • Simple web pages? Pick whatever you like • Of cause including Go • Middle size web application, like a forum? • php / Rails / Django / asp.net are more mature • Go also can, if you like re-inventing the wheel • How about large website？
- 52. Needs for large website • Stability rules • Scalability & Distributed are important • SOA architecture • Performance are critical • Maintainable code (With GoRazor; even the templates are strong- typed & compiler checked)
- 53. • Quick prototyping, and switch technology/platform? • Works, but these are technical debt! • If we could owe less debt since the beginning, why not?
- 54. Go is suitable to development large website!
- 55. Finally, I would like to talk about Go & startup
- 56. Q & A
- 57. Reference • https://talks.golang.org/2012/splash.slide • http://open.qiniudn.com/go-next-c-pptx.pdf • http://www.csdn.net/article/2012-09-14/2809984-will-go-be-the-new-go-to- programming-lan • http://weibo.com/1889019865/B4nx3z6GF • http://www.yinwang.org/blog-cn/2014/04/18/golang/ • http://zh.wikipedia.org/wiki/PHP • http://www.ituring.com.cn/article/1339