Function Compute is a fully managed, event-driven computing service. To use Function Compute, you only need to write and upload your code or images. This allows you to focus on coding without the need to plan and purchase infrastructure such as servers. Function Compute allocates computing resources, runs tasks in an elastic and reliable manner, and provides features such as logging, performance monitoring, and alerting.
Tutorial video
What is Function Compute?
Function Compute is a serverless compute engine that is designed with function computing in mind. It provides an event-driven solution to implement end-to-end functions between Alibaba Cloud services. Function Compute allows you to create and deploy applications and services of any type in a quick and efficient manner. Furthermore, you are charged only for the actual amount of resources that you use.
What is a serverless architecture?
Compared with serverful architectures, serverless architectures let you pay only for the resources you use instead of all provisioned servers. This allows enterprises to focus on developing their business logic without the need to manage servers.
Architecture
Function Compute uses components, such as services, functions, instances, runtimes, triggers, and layers, to provide services. The following figure shows the architecture of Function Compute.
For description about components in the following figure, see Terms.
How to Use
Before you start
Before you use Function Compute to deploy and debug applications, we recommend that you familiarize yourself with the following aspects:
Basic concepts of serverless architectures and forms of serverless architectures: function as a service (FaaS), platform as a service (PaaS), and backend as a service (BaaS)
A high-level programming language, such as Python, Node.js, Java, Go, and .NetCore, as well as basic concepts such as runtimes and dependency management
Network knowledge, such as the concepts of public networks and private networks.
Workflow
The following figure shows the workflow of Function Compute.
The preceding procedure consists of the following steps:
Activate Function Compute. Register an Alibaba Cloud account and activate Function Compute. For more information, see Step 1: Activate Function Compute.
Write code to develop an application or service. For information about the languages that are supported by Function Compute, see Overview.
The developer uploads the application to Function Compute.
You can use one of the following methods to upload the application:
(Recommended) Use the Function Compute console.
(Recommended) Use Serverless Devs.
For more information about how to use Serverless Devs, see Serverless Devs.
Use an API operation or SDK.
For more information, see SDK Reference (2021-04-16, recommended).
Trigger the function. A function can be triggered by events or API operations. Function Compute support auto-scaling based on requests. This process is imperceptible to users.
You are charged based on the actual execution duration of the function. After the function is executed, you can view the execution fees on the bill. The billing granularity is accurate to the millisecond. For more information, see Billing overview.
Usage methods
You can use the following methods to create and manage your applications and functions:
Use the Function Compute console. The Function Compute console provides a web UI for you to access functions. For more information, see Quickly create a function.
Use Serverless Devs. Download the corresponding application template in Function Compute, and then quickly develop and deploy a function application. For more information, see Manage function resources by using Serverless Devs.
Call the Function Compute SDKs. SDKs provides language-specific API operations and can manage connection settings, such as signature calculation, retry handling, and error handling. For more information, see Use SDKs to run HTTP trigger functions.
Language support
The following table lists the languages that can be used to write function code in Function Compute and the deployment methods that are supported in each language.
Language | Supported deployment methods |
Function Compute console, Serverless Devs, and SDK | |
Function Compute console, Serverless Devs, and SDK | |
Function Compute console, Serverless Devs, and SDK | |
Serverless Devs and SDK | |
Serverless Devs and SDK | |
Serverless Devs and SDK | |
Serverless Devs and SDK | |
Serverless Devs and SDK |
For information about the languages that are supported by custom runtimes, see Event handlers and HTTP handlers.
Pricing
For more information about the billing of Function Compute, see Billing overview.
References
Topic | Reduction rate |
Describes the common scenarios of Function Compute, including web applications, data extract, transform, load (ETL) processing, AI inference, and video transcoding. | |
Describes function types (event functions and HTTP functions), function runtimes (built-in runtimes, custom runtimes, and Custom Container runtimes), and function storage types (Apsara File Storage NAS (NAS), Object Storage Service (OSS), temporary storage, and layers), that are supported by Function Compute. | |
Describes terms used in Function Compute to help you better understand related concepts and use Function Compute. | |
Summarizes FAQs of different categories in Function Compute. | |
Provides methods to contact technical support when you encounter problems or want to provide feedback. |