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Monolith to Event-Driven Microservices
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Eko Kurniawan Khannedy
August 06, 2019
Technology
1
250
Monolith to Event-Driven Microservices
Software Architecture Conference
Eko Kurniawan Khannedy
August 06, 2019
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Transcript
Monolith to Event-Driven Microservices Eko Kurniawan Khannedy
Eko Kurniawan • Senior Principal R&D Engineer at Blibli.com •
10 Years of Experience in IT Industry • Software Architect behind: ◦ Blibli.com New Backend System ◦ Blipay
Agenda • Microservices • Event-Driven Architecture • Hands-On using Java
Microservices
Monolith vs Microservices Application Monolith Microservices
Monolith vs Microservices Deployment Monolith Microservices
Characteristic of Microservices 1. Componentization via Services 2. Organized around
Business Capabilities 3. Products not Projects 4. Smart endpoints and dumb pipes 5. Decentralized Governance 6. Decentralized Data Management 7. Infrastructure Automation 8. Design for failure 9. Evolutionary Design https://martinfowler.com/articles/microservices.html
Componentization via Services Library Service Product Library Shipping Library Product
Service Shipping Service
Organized around Business Capabilities Merchant Product Shipping
Decentralized Data Management MySQL Mongo Elasticsearch
Continuous Delivery Infrastructure Automation Unit Test Integration Test Deploy to
Staging Application Acceptance Test Deploy to Production Post Deploy Test
Design for failure • Monitoring • Circuit Breaker • Chaos
Monkey
How Big is Microservices? • Single Responsibility • Small enough
to fit in in my head • X people per Service
Monolith • Simplicity • Consistency • Easy to Refactor •
Partial Deployment • Availability • Multiple Platform • Easy to Scale Microservices
Event-Driven Architecture
API-Driven Microservices FRONTEND CART SERVICE ORDER SERVICE PAYMENT SERVICE
API-Driven Microservices Problem FRONTEND CART SERVICE ORDER SERVICE PAYMENT SERVICE
NOTIF SERVICE
Event-Driven Microservices FRONTEND CART SERVICE ORDER SERVICE PAYMENT SERVICE NOTIF
SERVICE CART EVENT
Event-Driven Microservices FRONTEND CART SERVICE ORDER SERVICE PAYMENT SERVICE NOTIF
SERVICE CART EVENT FRAUD SERVICE
Event-Driven Microservices Problem FRONTEND CART SERVICE ORDER SERVICE PAYMENT SERVICE
NOTIF SERVICE CART EVENT FRAUD SERVICE
Event-Carried State Transfer FRONTEND CART SERVICE ORDER SERVICE PAYMENT SERVICE
NOTIF SERVICE FULL CART EVENT FRAUD SERVICE CART DETAIL CART DETAIL CART DETAIL CART DETAIL https://martinfowler.com/articles/201701-event-driven.html
API-Driven • Highly-coupled • Centralized business logic • Consistent •
Increase response time • Sync Event-Driven • Decoupling • Decentralized business logic • Eventual consistent • Reduce load on producer • Replicated data • Async
The Challenges of Event-Driven Microservices • Idempoten • Asynchronous •
Message Schema • Versioning • Tracing • Message Order • Consumer Complexity • Message Broker
Hands-On using Java
Tools Required for This Workshop • Java Development Kit version
1.8 or Higher • Apache Maven version 3 • Apache Kafka version 2.3 • MongoDB version 4 • Elasticsearch version 7.2
MonoPay • MonoPay is whitelabel system for e-Wallet • Merchant
can use MonoPay to support e-Wallet feature in their system • MonoPay support member management, topup management, purchase management and point management • MonoPay use monolith architecture
MonoPay Backend System Merchant Module Cash Module Member Module Transaction
Module Mongo DB Partner System HTTP
MonoPay Wallet Project https://github.com/khannedy/monopay-wallet
How to migrate MonoPay to Event-Driven Microservices?
Migrating MonoPay to Microservices MonoPay eWallet Mongo DB Partner System
HTTP MonoPay API
Migrating MonoPay to Microservices MonoPay eWallet Mongo DB Partner System
HTTP MonoPay API MonoPay Merchant
Migrating MonoPay to Microservices MonoPay eWallet Mongo DB Partner System
HTTP MonoPay API MonoPay Merchant MonoPay Member
Migrating MonoPay to Microservices MonoPay eWallet Mongo DB Partner System
HTTP MonoPay API MonoPay Merchant MonoPay Member MonoPay Transaction
Migrating MonoPay to Microservices Mongo DB Partner System HTTP MonoPay
API MonoPay Merchant MonoPay Member MonoPay Transaction MonoPay Cash
Migrating MonoPay to Microservices Mongo DB Partner System HTTP MonoPay
API MonoPay Merchant MonoPay Member MonoPay Transaction MonoPay Cash Mongo DB Mongo DB Mongo DB
How to Integrate between Services?
API-Driven vs Event-Driven
MonoPay Microservices https://github.com/khannedy/monopay-api https://github.com/khannedy/monopay-merchant https://github.com/khannedy/monopay-member https://github.com/khannedy/monopay-transaction https://github.com/khannedy/monopay-cash
Migrating to Event-Driven Microservices Partner System HTTP MonoPay API MonoPay
Merchant MonoPay Member MonoPay Transaction MonoPay Cash KAFKA
One more thing
Migrating to Event-Driven Microservices Partner System HTTP MonoPay API MonoPay
Merchant MonoPay Member MonoPay Transaction MonoPay Cash KAFKA MonoPay Analytic ELASTICSEARCH Kibana Cloud
MonoPay Microservices https://github.com/khannedy/monopay-analytic
Thank You!