Summarize the points to note when starting to learn language development

Please indicate the source when reprinting: News APP back-end system architecture growth path - high availability architecture design 1. Entering the Holy Land for the first time 2. Foundation building: complete reconstruction 3. Golden elixir: step on the trap. . And it’s a big trap 4. Yuanying: Facing challenges, traffic is coming 5. Out of body: server architecture adjustment and optimization 6. Overcoming the Tribulation: Service Governance Platform 7. Mahayana: high availability of the server 8. Ascension: High availability of the client-[2017 HTTPS+HTTP-DNS] 1. Entering the Holy Land for the first time Due to work arrangements, some seniors from the original APP backend were transferred to other business departments. They began to take over the client backend work at the end of 2015. Entering the Holy Land for the first time was like entering purgatory. At that time, because there was still a lot of business development work at hand that needed the continued support of my friends, I had no choice but to break into APP back-end development alone. From the content business development that was handy in the past to the development of APP back-end interfaces, there is a lot of APP professional knowledge that I still don’t understand, and I can only learn a little bit about it

1. Recommended 10 back-end system examples

## Introduction:           Please reprint Indicate the source: The growth path of the back-end system architecture of the News APP - High-availability architecture design 1. First entry into the holy land 2. Foundation building: complete reconstruction 3. Golden elixir: stepping on the pit. . And it’s a big pitfall 4. Yuanying: Facing challenges, traffic is coming 5. Out of body: Adjustment and optimization of server architecture 6. Overcoming tribulation: Service management platform 7. Mahayana: High availability of the server  8. Ascension: High availability of the user side Available - [2017 HTTP...

##2.

How to create touch screen version page

##Introduction: I am new to the front-end. Let me share the implementation process of the touch screen carousel on the mobile phone. The general functions are as follows: It supports circular sliding width and can be set arbitrarily, without waiting for the screen. The wide page can be scrolled vertically. Callbacks can be set to monitor the switching of elements. Pure js, without any third-party library principles. Assume that the width of the child element .item is 375px. Use absolute positioning to place all child elements within the parent element and place the parent element .carousel. The width is set to 375px, which is the same as the width of the child element.item. Add a touch event to the parent element.carousel: touchstart,...

3.

About the carousel image in H5 Production method

Introduction: I am new to the front-end and would like to share the implementation of the touch screen carousel on mobile phones. The process, the general function is as follows: supports cyclic sliding width, which can be set arbitrarily, and does not need to be the same width as the screen. The page can be scrolled vertically. Callbacks can be set to monitor the switching of elements. Pure js, without relying on any third-party library principles. Assume that the width of the sub-element .item is 375px. , use absolute positioning to place all child elements within the parent element. Set the width of the parent element .carousel to 375px, the same width as the child element .item. Add touch events to the parent element .carousel: touchstart,...

4.

Detailed introduction about the end face

Introduction: Overcoming Closure Problem When I first learned JavaScript, I took many detours in learning closures. This time, I went back to sort out the basic knowledge. It is also a very big challenge to explain closure clearly. How important are closures? If you are new to front-end, I cannot tell you intuitively how ubiquitous closures are in actual development, but I can tell you that in front-end interviews, you must ask about closures. Interviewers often use their understanding of closures to determine the basic level of the interviewer. It is conservatively estimated that at least 5 out of 10 front-end interviewers will die on closures. But why is closure so important...

5.

An example tutorial of using H5 to implement a carousel (touch screen version)

Introduction: I am new to the front-end. Let me share the implementation process of the touch screen carousel on the mobile phone. The general functions are as follows: It supports circular sliding width and can be set arbitrarily. It does not need to be the same width as the screen. The page can be scrolled vertically and can be set. The switching of callback listening elements is pure js, without any third-party library principles. Assume that the width of the child element .item is 375px. Use absolute positioning to place all child elements within the parent element. Set the width of the parent element .carousel to 375px, and If the element .item has the same width, add a touch event to the parent element .carousel: touchsta...

6. Basics of WeChat Mini Program Development: Callback functions, anonymous functions, and closures (4)

Introduction: Strictly speaking, this cannot be regarded as a WeChat mini program tutorial, but We will use the app.js code in the previous article as an example, so let’s just add some numbers. Callback function Callback function may be a little difficult to understand for students who are new to programming. After all, the use of callback function is contrary to the intuitive process of program sequence execution. Imagine that you have ordered a takeaway. One way is to check whether the takeout has arrived regularly. The other way is to show your phone number to the delivery person and they will call you when it arrives. It is easy to see that the second one is a more efficient solution. In fact, this notification mechanism is applied to the programming field...

7. Front-end Advanced (4): Detailed illustration of scope chain and closure

##Introduction: When I first learned JavaScript, I was learning closures On the way, we took many detours. This time, I went back to sort out the basic knowledge. It is also a very big challenge to explain closure clearly. How important are closures? If you are new to front-end, I cannot tell you intuitively how ubiquitous closures are in actual development, but I can tell you that in front-end interviews, you must ask about closures. Interviewers often use their understanding of closures to determine the basic level of the interviewer. It is conservatively estimated that at least 5 out of 10 front-end interviewers will die on closures. But why is closure so important...

8. Detailed explanation of WeChat applet development

Introduction: This series is a detailed explanation by the author from the beginning. It is suitable for beginners to watch and learn step by step according to the series; 1: The life cycle of the page is in the initial page: index.js Add the code shown in Figure 1

9. When you are new to web development, which one should you learn, php, python or ruby?

Introduction: PHP, python and ruby ​​are all suitable for WEB development, for beginners in web development , are more concerned about "Which one should I learn, php, python or ruby?", "Which one is easier to learn, python or php", "which one is better, ruby ​​or python?"

10. Front-end Basics Advanced (4): Detailed illustration of scope chain and closure

##Introduction: When I first learned JavaScript , I took many detours in learning closures. This time, I went back to sort out the basic knowledge. It is also a very big challenge to explain closure clearly. How important are closures? If you are new to front-end, I cannot tell you intuitively how ubiquitous closures are in actual development, but I can tell you that in front-end interviews, you must ask about closures. Interviewers often use their understanding of closures to determine the basic level of the interviewer. It is conservatively estimated that at least 5 out of 10 front-end interviewers will die on closures. But why are closures so important, yet so many people still don’t understand it? Is it because everyone is unwilling to learn? It’s really not, but most of the ones we found through searching that explain closures

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