1. 1. WSO2 API Manager Deploy Your APIs for High Availability and Scalability Janaka Ranabahu Associate Technical Lead, WSO2 Harsha Kumara Software Engineer, WSO2
2. 2. About the Presenters Janaka Ranabahu Associate Technical Lead, WSO2 Janaka is an Associate Technical Lead at WSO2. His main focus is on the WSO2 API Manager and has contributed to the WSO2 Governance Registry and WSO2 AppFactory. Harsha Kumara Software Engineer, WSO2 Harsha is Software Engineer at WSO2. He holds a bachelors degree in Computer Science and Engineering from University of Moratuwa. His areas of interests include distributed systems, web services, adapting NoSQL databases for business applications and data mining applications.
3. 3. Agenda o Introduction o API Manager component breakdown o Integration of API Manager components o API Manager deployment patterns oStandalone oFully distributed oFully distributed with cluster of each components o Q&A
4. 4. WSO2 API Manager Features o API Creation o API Publication o API Lifecycle Management o API Versioning o API Monetization o API Security
5. 5. WSO2 API Manager Capabilities o WSO2 Enterprise Service Bus o WSO2 Identity Server o WSO2 Governance Registry o WSO2 Data Analytics Server
6. 6. API Manager Component breakdown o API Store This component provides a space for consumers to self-register, discover API functionality, subscribe to APIs, evaluate them, and interact with API publishers. o API Publisher This component enables API providers to easily create, publish their APIs, share documentation, provision API keys, and gather feedback on API features, quality, and usage.
7. 7. API Manager Component breakdown o API Gateway This component is responsible for securing, protecting, managing, and scaling API calls. The API gateway is a simple API proxy that intercepts API requests and applies policies such as throttling and security checks. o API Key Manager This component is responsible for all security and key- related operations. When an API call is sent to the Gateway, it calls the Key Manager server and verifies the validity of the token provided with the API call.
8. 8. Data Storages o API Manager Database Stores information related to the APIs along with the API subscription details. o User Manager Database Stores information related to users and user roles. This information is shared among the Key Manager Server, Store, and Publisher. o Registry Database Used to store API metadata and other information. Shares information between the Publisher and Store. Default carbon database embedded with API Manager binary distribution will contain all tables necessary for registry and user management.
9. 9. Component Interaction
10. 10. API Publisher Flow
11. 11. API Subscriber Flow
12. 12. API Invocation Flow
13. 13. Standalone Mode Deployment
14. 14. Fully Distributed Deployment
15. 15. Fully Distributed Deployment : Store Cluster
16. 16. Fully Distributed Deployment : Gateway & Key Manager Cluster
17. 17. Fully Distributed Deployment : Full Cluster
18. 18. Multi Zone Deployment
19. 19. Scaling o Many occasions, we need to scale gateway and key manager when serving increasing traffic to gateways o Scale horizontally achieved by adding more nodes to a system o Adding a new node to a gateway cluster will scale gateway cluster horizontally o Scale vertically achieved by adding resources to a node in a system, typically addition of more computing power(RAM)
20. 20. Scale Horizontally o To scale horizontally means to add more nodes to a system, such as adding a new node to a gateway cluster o If we take gateway as an example, we can add more nodes to gateway cluster on demand o Then load balancer should be detect newly added nodes and route requests to them o This is the most common and widely used pattern of scaling API Manager deployments o We can apply this pattern to gateway, key manager, store and publisher
21. 21. Scale Horizontally
22. 22. Scale Vertically o Scale vertically means add more resources to a single node in a system, typically involving the addition of more computing power, RAM and etc o Implementation of WSO2 API Faade facilitate by using WSO2 API Manager to build Demand and Faade layer, WSO2 ESB to build mediation layer and connect to the existing services o In API Manager we can add mediation logic, service chaining, message formatting to API definition o With API Faade pattern mediation, transformation logic will handled by ESB layer and it will add additional processing power to API management layer
23. 23. Scale Vertically