Microservices, docker , kubernetes and many more

Microservices, docker , kubernetes and many more

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  Microservices, Docker , Kubernetesand many more By : Vishwas Narayan
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  Microservices ● Microservice architectureis a type of service-oriented architecture in which an application is organised as a series of loosely connected services. ● Microservices architecture is characterised by fine-grained services and lightweight protocols. ● Communication through the well defined API’s ● This is a separate Business logic instead of one Problem statement
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  User Interface Business Logic DataAccess Layer API CALL LAYER DATA BASE
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  User Interface Microservice Microservice Microservice Microservice Microservice Microservice Microservice
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  DB DB DB DB DB DB DB DBDB DB DB DB DB DB
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  Advantages ● Greater agility ●Faster time to market ● Better scalability ● Faster development cycles (easier deployment and debugging) ● Easier to create a Cl/CD pipeline for single-responsibility services ● Isolated services have better fault Tolerance ● Platform- and language agnostic services ● Cloud-readiness
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  In summary ● Microservicesmay be deployed individually, giving teams more control. ● Microservices are scalable in their own right. ● Microservices decrease downtime by isolating faults. ● The smaller codebase allows teams to grasp the code more quickly, making it easier to maintain.
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  Cons ● More collaborationis required (each team has to cover the whole microservice lifecycle) ● Because of the architecture's complexity, it's more difficult to test and monitor. ● Due to the requirement for microservices to communicate, performance will suffer (network latency,message processing, etc.) ● It's more difficult to keep the network up to date (has less fault tolerance, needs more load balancing, etc.) ● Doesn't function until there's a strong company culture in place (DevOps culture,automation practices,etc.) ● Concerns about security (harder to maintain transaction safety, distributed communication goes wrong more likely,etc.)
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  Service Service Service Service Service Service Service Service Service Service Service Service Service Service
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  Everything about docker
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  Container are verylight weight SERVER HOST OS GUEST OS HYPERVISOR LIBRARIES/Bin APP A GUEST OS LIBRARIES/Bin APP B VM SERVER HOST OS APP A APP B LIBRARIES LIBRARIES CONTAINER S • Containers are isolated but share OS • Increase the compute density and memory utilization DOCKER ENGINE
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  ● NODE ● PODS ●Service ● Deployment
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  Cluster Master API Server Scheduler Controller etcd Kubelets Docker NODE Kubelets Docker NODE Kubelets Docker NODE
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  Cluster Master API Server Scheduler Controller etcd Kubelets Docker NODE Kubelets Docker NODE Kubelets Docker NODE Kubelets Docker NODE Worker Node
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  Kubernetes Provides ● Servicediscovery & load balancing ● Storage orchestration ● Automated rollouts & rollbacks ● Automated bin packing ● Self-healing ● Secret & configuration management