Comparison and evaluation of code on cloud - devcloud

1 Preface

This article is mainly through the study of Huawei “ One line of code second cloud application development training camp ” Theoretical knowledge and cloud operation practice in the course , Understand Huawei software development platform DevCloud, Then compare the code to use DevCloud Cloud and original non cloud operations , Description in project creation 、 code 、 compile 、 The similarities and differences of deployment and other steps .

Before the clouds , There are two main ways to deploy the code from development to online deployment , The first is that the whole process is made by hand ; The second one is divided into two stages , The first stage is compilation, packaging and before , It is completely handmade , The latter uses automated script .

2 Overall process comparison

The following table shows , For pure manual 、 manual + Tools to automate deployment and cloud code 、 Development machine requirements 、 Server requirements 、 Development convenience, etc .

The way Contrast item	By hand	manual + Automated Deployment	Code on the cloud
Tools	Development ： Use different development tools according to the language , Such as Eclipse、VSCode、pycharm、 Database tools, etc ; Compile the package ： Use different compilation and packaging software according to the language , Generally, it is to use development tools directly ; Run package upload ： Generally, try it first sftp The tool uploads the running package to different servers , Usually, if there are multiple servers, they need to be uploaded separately ; Server configuration modification ： According to specific operation requirements , Modify application configuration 、 Operating system configuration, etc ; Database script ： Log in to the database connection tool , Execute the database script manually , Manually check the implementation ; Start stop service ： Execute startup and shutdown scripts .	Development ： It is the same as pure manual ; Compile the package ： It is the same as pure manual ; Run package upload ： Generally, try it first sftp The tool uploads the running package to the transit server , Then distribute the running package to the server to be deployed through the automation service ; Server configuration modification ： The automation service is covered according to the written full configuration ; Database script ： The automation service calls the code to connect to the database and execute the database script that needs to go online ; Start stop service ： The automation service executes the startup and shutdown scripts .	browser （DevCloud： Huawei cloud account is required ）
Development machine requirements	According to the differences of development projects , There needs to be a corresponding CPU、 Memory 、 Storage and other requirements	It is the same as pure manual	You can use the browser
Server requirements	Deploy the application server , According to the single machine 、 double-click 、 Distributed and other specific methods , The number of servers varies .	Except for the content that is different from the pure manual method , It also needs to be used for deployment “ Automated services ” Machine , According to their own requirements ,1 To n The machines are unequal .	In addition to the machines required by the pure manual method , You also need a server for storing the contents of the compile run package , Usually 1 It's enough .
Development convenience	Generally, a single development tool is enough , Development 、 compile 、 debugging 、 Modify the source code	It is the same as pure manual	Jump to multiple function pages , More complicated
compile	Development tools or plug-ins have built-in compilers , One click compilation	It is the same as manual work or compilation tools , Such as java Of ant	According to the language 、 The application type , Customize the compilation process and script in a visual way . And you need to confirm the path of the stored server .
Upload the running package	Upload according to application type	Upload to the intermediate server , Then automatically distribute .（ Configure related servers in advance ）	According to the language 、 The application type , Customize the deployment process and scripts in a visual way .
Time consuming	Development ： normal Deploy ： It's more complicated , The more servers, the longer it takes	Development ： normal Deploy ： convenient , Just write the automation script for the first time , Soon after , Less time consuming	Development ： tedious Deploy ： Soon , Just write the automation script for the first time , Soon after , Less time consuming

3 summary

From the perspective of comparison , By hand 、 manual + Automated Deployment and code cloud deployment have their own advantages and disadvantages , Through the overall evaluation , The main conclusions are as follows , You can choose according to different projects and deployment methods ：

1. Purely manual and manual + Automated Deployment Development is more convenient , Can be very simple to code 、 debugging 、 Modify the code, etc , and Code on the cloud The operation is relatively complicated ;

2. Pure handmade and handmade + Automated Deployment The requirements for development machines are relatively high , Code on the cloud The tools that need to be prepared are simple , Usually you just need a browser ;

3. From the perspective of the servers required for deployment , Pure manual requires the least resources , Code on the cloud second , manual + Automated Deployment A lot of additional resources may be added ;

4. manual + Automated Deployment And code cloud is very convenient for uploading and running packages , Just prepare the content according to the rules .