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Case study of the good enough architecture
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Jakub Kubryński
July 01, 2017
Programming
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390
Case study of the good enough architecture
Jakub Kubryński
July 01, 2017
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Transcript
@jkubrynski CASE STUDY OF THE GOOD ENOUGH ARCHITECTURE JAKUB KUBRYNSKI
[email protected]
/ @jkubrynski / kubrynski.com
$ WHOAMI DEVSKILLER CO-FOUNDER BOTTEGA TRAINER DEVOXX.PL PROGRAM COMMITTEE MEMBER
OPEN SOURCE CONTRIBUTOR
"Have no fear of perfection - you'll never reach it."
― Salvador Dalí
WHAT YOU CAN LEARN FROM A STARTUP
IS THERE A PERFECT ARCHITECTURE?
FAST FEEDBACK AND COST-EFFECTIVE
1. MOST ORGANIZATIONS "DO AGILE" 2. MOST ORGANIZATIONS SHIP NEW
FEATURES IN MONTHS
DON'T DO AGILE. BE AGILE!
CONTINUOUS DELIVERY
RELEASE VS DEPLOYMENT
REGRESSION IS TOO EXPENSIVE
VERIFY CRITICAL PATHS AND LET YOUR USERS DO THE REST
BUT... CARE ABOUT UNIT TESTS AND FIX BUGS AS ASAP
AS POSSIBLE
MICROSERVICES AUTONOMOUS RELEASES CLOUD READY FAST PIPELINES
COMMUNICATION IS THE ROOT OF ALL EVIL
SLA 99.9 ^ 10 = 99.0
QUALITY SHARED MODEL? E2E TESTS?
CONTRACTS FTW! IF A==C && B==C THEN A==B
SAY NO TO VERSIONING BE UP TO DATE
PERFORMANCE
PERFORMANCE TESTS ARE EVEN MORE EXPENSIVE THAN REGRESSION
PERFORMANCE TESTS CANARY DEPLOYMENTS MONITORING
MONITORING IS THE NEW TESTING
MONITORING PERFORMANCE SYSTEM HEALTH EXCEPTIONS
METRICS EVERYWHERE LIVE BUSINESS INTELLIGENCE DATA DRIVEN ORGANIZATION
DATA DRIVEN MEANS ONLY VALUABLE STUFF
ANY ACTION IS AN INVESTMENT
THINK ABOUT ROI
SAFE TO FAIL MINIMIZE IMPACT
SAFE TO FAIL SELF-HEALING COMMUNICATION
SAFE TO FAIL INSTANT WARNING
SAFE TO FAIL ROLLBACK
SAFE TO FAIL ELIMINATE HUMAN ERRORS
REPEATABILITY
AUTOMATION
MACHINES COMPARED TO HUMANS: ARE GOOD IN REPEATING TASKS ARE
EASY TO ESTIMATE ARE MUCH CHEAPER
AUTOMATE TESTS
AUTOMATE DEPLOYMENTS
AUTOMATE SETUP
AUTOMATE INFRASTRUCTURE
EVERYTHING IS CODE APPLICATION SOURCE BUILD JOBS DEPLOYMENT PIPELINES DEPLOYMENT
SCRIPTS INFRASTRUCTURE OS CONFIGURATION APPLICATION PROPERTIES RUN BOOKS
NO BACKUPS * EXCEPT DATA AND GIT
MINIMIZE OVERHEAD BY KEEPING ORDER
CONVENTION OVER CONFIGURATION
CONVENTION EXAMPLE repository: git.acme.com/repos/{serviceName}.git artifactId: target/{serviceName}.jar application home: /opt/{serviceName} logs:
/opt/{serviceName}/logs/service.log dashboard: grafana.acme.com/dashboard/db/{serviceName} public ip: acme-prod-weu-{serviceName}-pip loadbalancer: acme-prod-weu-{serviceName}-lb VMs: acme-prod-weu-{serviceName}-vm-{i}
GOOD ENOUGH
KEY TAKEAWAYS MONITORING AUTOMATION CONVENTIONS CONTINUOUS DELIVERY
QUESTIONS?
THANKS FOR YOUR PATIENCE