Shulou(Shulou.com)05/31 Report--

Today, I will talk to you about how to analyze the product architecture and common application scenarios of API gateway. Many people may not know much about it. In order to make you understand better, the editor has summarized the following contents for you. I hope you can get something from this article.

Since the development of computer network in the 1960s, API (Application Programming Interface) was born. API, the application program interface, is the bridge to realize the connection between systems. Today, the API market has formed a huge ecosystem, and the API gateway plays a vital role in the process of embracing the API economy.

What is an API Gateway

API Gateway provides complete API hosting services to assist users to open their capabilities, services and data to partners in the form of API, and can also be published to the API market for more developers to purchase.

1. Provide multiple means such as anti-attack, anti-replay, request encryption, identity authentication, permission management, flow control and other means to ensure API security and reduce the risk of API opening.

2. Provide API definition, testing, release, offline and other lifecycle management, and generate SDK and API documentation to improve the efficiency of API management and iteration.

3. Provide convenient monitoring, alarm, analysis, API market and other operation and maintenance tools to reduce API operation and maintenance costs.

API hosting service: provide enterprises and developers with low-cost, highly available, secure, convenient and easy-to-manage API development capabilities. In the API market, the average number of calls per day has exceeded 120 million. Based on this background, Aliyun has newly explored the cloud market capability center, established API ecology, and provided enterprise customers and partners with an one-stop solution for API purchase and API realization. The API gateway maximizes the reuse rate of capabilities, so that enterprises can borrow from each other, and their development can focus on their own business and achieve win-win results.

API Gateway Product Architecture

The API gateway can achieve:

1. API Lifecycle Management

● support includes life cycle management features such as API release, API testing, API offline, and so on.

● supports maintenance functions such as API daily management, API version management, API quick rollback, and so on.

2. Comprehensive safety protection

● supports multiple authentication methods and supports HMAC (SHA-1,SHA-256) algorithm signature.

● supports HTTPS protocol and SSL encryption.

● anti-attack, anti-injection, request anti-replay, request anti-tamper.

3. Flexible access control

The ● user uses APP as the request API, and the gateway supports permission control for APP.

● only the authorized APP can request the corresponding API.

The ● API provider can proactively authorize an APP to call an API.

If the ● API is put on the API market, the purchaser can license the purchased API to his own APP.

4. Accurate flow control

● flow control can be used to control the access frequency of API, the request frequency of APP, and the request frequency of users.

The time unit of ● flow control can be minute, hour, day.

● also supports traffic control exceptions, allowing you to set special APP or users.

5. Request verification

● supports parameter type and parameter value (range, enumeration, regular, Json Schema) verification. Invalid verification will be directly rejected by the API gateway, reducing the waste of resources caused by invalid requests to the backend and greatly reducing the processing cost of the back-end service.

6. Data conversion

● implements front-end and back-end data translation by configuring mapping rules.

● supports the data conversion requested by the front end.

● supports data transformations that return results.

7. Monitoring and alarm

● provides visual API real-time monitoring, including: call volume, traffic size, response time, error rate, and gradually increasing dimensions.

● supports historical query for overall analysis.

● can configure early warning methods (SMS, Email) and subscribe to early warning information in order to grasp the operation of API in real time.

8. Automatic tools

● automatically generates API documents for online viewing.

The ● API gateway provides examples of SDK in multiple languages. Reduce the operation and maintenance cost of API.

● provides visual interface debugging tools for quick testing and quick launch.

9. API market

● can put API on the API market for more developers to purchase and use.

API gateway provides a complete and developer-friendly API management mode. Users can not only use the console to manage API, but also connect with existing systems. For API gateways, there are two ways to use them:

1. Share the instance

If you activate it for free, you only need to pay for the number of calls and traffic generated. However, because you share an instance, many multi-tenants will be on one instance, so the security and stability are not as high as those of exclusive instances.

2. Exclusive instance

When the customer's business reaches a certain scale or has a higher demand for security and stability, you can buy an exclusive instance on the console. After purchase, the system will automatically provide a separate entry IP, exclusive server cluster. Exclusive instances can meet the requirements of higher SLA. After switching groups to exclusive instances, you can enjoy higher service standards, and you only need to operate independently on the console.

Common application scenarios of API

API gateway can support the need for open API in various scenarios, open API to partners and developers, monetize enterprise core competencies, and establish API ecology; support adapting API to multiple terminals, such as mobile, Internet and IoT, to achieve separation of front and rear ends of the system; and support internal system integration, modularization and micro-service.

1. Establish API ecology, borrow strength from each other, and develop in coordination.

In the face of the growing and fragmented needs of users, enterprises need to constantly explore new business models to solve a series of customer scene problems. Through the API gateway to provide standard API services, let other developers integrate different API service combinations into their own applications, derive new services, and promote enterprises to establish business ecology and cross-border innovation.

● opens the core competence of the enterprise to partners through the API gateway to achieve in-depth cooperation and coordinated development.

● connects API to the Ali Cloud market, opening up capabilities, services and data in the form of API for developers to purchase and use, generating value

● in the API market, the procurement of third-party mature capabilities and services, to avoid flat development, focus on professional, take advantage of development.

2. Secure realization of multi-terminal unification, a set of services, and multi-terminal output

With the popularity of mobile and Internet of things, API needs to support more terminal devices to expand the scale of business, but it also brings about the improvement of system complexity. The API can be adapted to multiple terminals through the API gateway, and the enterprise only needs to adjust the API definition at the API gateway without additional work.

● enterprises only need to maintain a service system for multi-terminal output, and only need to adjust the definition of API to support APP, devices, web and other terminals.

● avoids multiple API sets in multiple scenarios, which greatly reduces the cost of management, operation and maintenance.

3. System integration, standardization and standardization can be realized easily.

● standardizes and unifies the interface between systems through API gateway, and uses standardized interface to realize system integration.

● quickly completes resource integration and management, eliminates redundancy and waste caused by rapid development, and focuses on business development.

After reading the above, do you have any further understanding of how to analyze the product architecture and common application scenarios of the API gateway? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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