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This article introduces you how to quickly migrate Express applications to the cloud, the content is very detailed, interested friends can refer to, hope to be helpful to you.

As one of the most popular Node frameworks, Express framework provides a series of powerful features to help users create a variety of Web applications and rich HTTP tools. At the same time, it is also the bottom library of many other popular Node frameworks.

With the advantages of low cost and free operation and maintenance, Serverless makes many Express developers begin to think about how to migrate applications to the cloud. Now you can perfectly migrate your Express application to Serverless through the Serverless application console and just modify a few lines of code, enjoying the unlimited convenience of Serverless.

Functional advantage

Low transformation cost: Serverless components automatically help users complete the cloud adaptation conversion on the framework. Users only need to focus on the business code and complete cloud deployment with only a few lines of changes.

Application-level resource display and management: after successful deployment, users can easily view and manage the created cloud resources through the Serverless application console without the need for multiple page switching to achieve centralized management of multiple resources.

Automatically create layer deployment: the Serverless application console will automatically create layers for users and automatically package and upload node_modules dependencies in the project to the layer to facilitate subsequent continuous development and optimize deployment time.

Continuous build based on code hosting: continuous build is supported, and redeployment can be triggered automatically when there are updates to the project imported from the code repository.

Application-level monitoring chart: provides the monitoring capability at the application level. Users can see not only the number of calls and errors of each resource, but also the monitoring indicators at the application level, which is convenient for operation and maintenance.

Prerequisite for deployment: your account has activated Serverless Framework and Coding DevOps services.

Activation is very simple. As long as you log in to the Serverless console, you will be prompted to complete the activation according to the instructions. There is no charge for the activation process.

Console link: https://console.cloud.tencent.com/sls

Create an application

Follow these tutorial steps to quickly experience the framework migration:

Create based on template

Go to the Serverless application console and click "New Application" to enter the application creation page.

Enter your application name, select * * create template * *, and select Express frame.

Click "create", and the Serverless console will automatically start to deploy the application for you. After the deployment is completed, you can go to the application details page to view the created cloud resources, monitoring logs, deployment records and other information. You can also modify the configuration and redeploy on the "Development and deployment" page.

Import an existing project

Go to the Serverless application console and click "New Application" to enter the application creation page.

Enter your application name, select * * Import existing Project * *, and select Express App to import your existing project directly.

The Express framework project needs a single line of code modification before it can be deployed. For more information, please refer to the project modification document: https://cloud.tencent.com/document/product/1242/50319

Select the code upload method. The Serverless console allows you to upload the local project deployment directly, or you can import the code repository.

Code hosting

Currently, the code repository addresses of GitHub, GitLab and Gitee are supported, and the exposed custom code base is also supported. You can automatically update the application by selecting the trigger method of the application.

Folder upload

You can import the local project directly by uploading the folder. For the Node.js framework, Serverless Framework will automatically create a layer for you and transfer the dependent package node_modules into the layer to complete the deployment.

Click "create", and the Serverless console will automatically start to deploy the application for you. After the deployment is completed, you can go to the application details page to view the created cloud resources, monitoring logs, deployment records and other information. You can also modify the configuration and redeploy on the "Development and deployment" page.

Management and application

After the application is created, you can view the project details on the application details page, which mainly supports the following management functions.

1. Resource management

On the "Resource list" page, you can view the cloud resources created for you by the current application, and view the basic configuration information.

two。 Development and deployment

At the top of the application details page, click "Development deployment". You can easily implement configuration modification and secondary deployment upload of the application. Local upload, code hosting and CLI development are supported.

At the same time, you can also modify the application configuration information on this page and click "Save" to complete the redeployment.

3. Application monitoring

On the * * Application Monitoring * * page, you can view the basic information, project request times, project error statistics and other monitoring metrics output after project deployment, which makes it easy for you to manage and maintain the project.

4. Deployment log

On the "deployment Log" page, you can see the deployment log of "deploy through console" or "automatically triggered", as well as the deployment result.

At this point, you can migrate your Express application to Serverless without a single line of code change, and you can monitor and manage the application, develop continuously, and enjoy the many advantages brought by Serverless.

On how to quickly migrate Express applications on the cloud to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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