What are Microservices?
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Microservices are an architectural style where a single application is composed of a suite of small services that communicate with each other via open protocols. The key principles of microservices are that services are very small, independently deployable and upgradable, and encapsulate a business capability. Microservices provide benefits like faster development cycles, fault isolation, and easier scaling, but also challenges like complexity in distributed systems and inter-service communication. Microservices may be suitable if an organization needs to develop and scale faster and teams are accustomed to distributed development, but may not be suitable if teams are not agile or the infrastructure is traditional.
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Web services is a special case of a service-oriented architecture (SOA), which is, basically, a representation of web application‘s functionality. Web service is more of a generalized concept that implies whole functionality as a whole but Microservice handles only the single specific task. MSA is emerging as an excellent architecture style enabling the division of large and complex applications into micro-scale yet many services, each runs in its own process, has its own APIs, and communicates with one another using lightweight mechanisms such as HTTP. Microservices are built around business capabilities, loosely coupled and highly cohesive, horizontally scalable, independently deployable, technology-agnostic, etc. On the other side for the business dynamic requirement these microservices need to be composed for the realization of enterprise-scale, and business-critical applications. Service composition is combining various services together to provide the solution for the user dynamic queries. There are two methods for the microservice composition i.e. orchestration and choreography. In this paper,a health case study is performed for the selection mechanism of orchestration method and choreography method in various situation.
SELECTION MECHANISM OF MICRO-SERVICES ORCHESTRATION VS. CHOREOGRAPHY
ABSTRACT Web services is a special case of a service-oriented architecture (SOA), which is, basically, a representation of web application‘s functionality. Web service is more of a generalized concept that implies whole functionality as a whole but Microservice handles only the single specific task. MSA is emerging as an excellent architecture style enabling the division of large and complex applications into micro-scale yet many services, each runs in its own process, has its own APIs, and communicates with one another using lightweight mechanisms such as HTTP. Microservices are built around business capabilities, loosely coupled and highly cohesive, horizontally scalable, independently deployable, technology-agnostic, etc. On the other side for the business dynamic requirement these microservices need to be composed for the realization of enterprise-scale, and business-critical applications. Service composition is combining various services together to provide the solution for the user dynamic queries. There are two methods for the microservice composition i.e. orchestration and choreography. In this paper,a health case study is performed for the selection mechanism of orchestration method and choreography method in various situation.
Microservices and developer pattern saga
This document discusses microservices architecture. It defines microservices as splitting business logic and data access into small, independent parts. Key benefits of microservices include scalability through distribution across servers, ability to scale parts of the system independently, high portability using container technologies, and increased availability if one server fails. The document cautions that microservices are not suitable if an application relies heavily on in-memory state or transactions. It also notes challenges like deciding service granularity and increased operations complexity.
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What are Microservices?
- 1. What are Microservices? Ashwin Chandrasekaran Aug 2017
- 2. Microservices Architectural style where a single application is composed of suite of small services
- 3. SOA vs MSA Controller Services Data Access Database SOA Horizontal layering Account Service MSA Vertical layering Shipping Service Cart Service Data Flow
- 4. Microservices Key Principles Services are very small Independently deployable and upgradable Communicate with each other via open protocols Encapsulate business capability
- 5. Microservices Benefits Faster development cycles Fault isolation Multiple technology stacks possible Easier to scale
- 6. Microservices Challenges Complexity of distributed system Inter-service communication may be complex End-to-end testing is complex Transactions are complex (ACID vs Eventual Consistency)
- 7. Are microservices right for you? May be! ● Need to develop and scale faster ● Teams are used to distributed development ● Infrastructure is modern and robust May be not! ● Teams are not agile ● Less frequent and fixed product releases ● Traditional infrastructure
- 8. Useful resources ● http://microservices.io/patterns/microservices.html ● https://martinfowler.com/microservices/