ASP.NET CORE SHIFT LEFT & START OUT RIGHT Chris Ayers

CHRIS AYERS AZURE / DEVOPS CONSULTANT [email protected] Twitter: @Chris_L_Ayers linkedin.com/in/chris-l-ayers/ Blog: https://chrislayers.com/ Github: https://github.com/Codebytes

WHAT IS DEVOPS?

DevOps is the union Of people, process, and products to enable continuous delivery of value to our end users. -Donovan Brown

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PRACTICES Automated Testing Continuous Integration Continuous Deployment Release Management PRACTICES Usage Monitoring Telemetry Collection Testing in Production Stakeholder Feedback PRACTICES Testing in Production Usage Monitoring User Telemetry Stakeholder feedback Feature flags PRACTICES Code Reviews Automated Testing Continuous Measurement PRACTICES Application Performance Management Infrastructure as Code Continuous Delivery Release Management Configuration Management Automated Recovery PRACTICES Application Performance Management Infrastructure as Code Continuous Deployment Release Management Configuration Management Automated Recovery PRACTICES Enterprise Agile Continuous Integration Continuous Deployment Release Management FLOW OF CUSTOMER VALUE TEAM AUTONOMY & ENTERPRISE ALIGNMENT BACKLOG refined with LEARNING EVIDENCE gathered in PRODUCTION MANAGED TECHNICAL DEBT PRODUCTION FIRST MINDSET INFRASTRUCTURE is a FLEXIBLE RESOURCE DEVOPS HABITS AND PRACTICES

LET’S SHIFT LEFT ON DEVOPS

WHAT IS SHIFT LEFT?

WATERFALL DEVELOPMENT Requirement Gathering and analysis System Design Implementation Integration and Testing Deployment of system Maintenance

AGILE Features Sprint 1 More Features Sprint 2 Release to Dev Sprint 3 More Features Sprint 4 Release to QA Sprint 5 •MVP •Release to Prod Sprint 6

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WHAT ARE WE GOING TO SHIFT LEFT? Health Monitoring Observability Feature Flags Configuration and Secrets API Versioning API Documentation

HEALTH MONITORING

HEALTH MONITORING  Built into ASP.Net (as of version 2.2)  Builtin Health probes  Custom Health checks  Readiness vs Liveness  Optional Healthcheck UI  System  Network  SqlServer  MongoD  Kubernetes  Npgsql  Elasticsearch  Redis  EventStore  AzureStorage  AzureServiceBus  AzureKeyVault  MySql  DocumentDb  SqLite  RavenDB  Consul  SignalR  Kafka  RabbitMQ  Uris  OpenIdConnectServer  DynamoDB  Oracle  Aws.S3  Hangfire  Gcp.CloudFirestore  Prometheus  Seq  ApplicationInsights  Datadog

HISTORICAL STATUS

MULTIPLE SERVICES

SAMPLE HEALTHCHECK

OBSERVABILITY

OBSERVABILITY: A MEASURE OF HOW WELL INTERNAL STATES OF A SYSTEM CAN BE INFERRED FROM KNOWLEDGE OF ITS EXTERNAL OUTPUTS.  Monitoring  Logging  Tracing  Analytics  Alerting

USER AND SESSION COUNTS PERFORMANCE COUNTERS HOST DIAGNOSTICS DIAGNOSTIC TRACE LOGS CUSTOM EVENTS AND METRICS REQUEST RATES, RESPONSE TIMES, AND FAILURE RATES DEPENDENCY RATES, RESPONSE TIMES, AND FAILURE RATES EXCEPTIONS PAGE VIEWS AND LOAD PERFORMANCE AJAX CALLS FROM WEB PAGES AZURE APPLICATION INSIGHTS

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APPLICATION INISIGHTS

CUSTOM EVENTS AND METRICS

FEATURE FLAGS

WHY? Code separation Minimize disruption to customers Progressive rollouts A/B Testing Kill switch

FEATURE FLAGS - ITS JUST AN IF

MICROSOFT FEATURE MANAGEMENT

CONFIGURATION AND SECRETS

WHERE DO WE CONFIGURE OUR APPLICATION? Source code Web.config App.settings Database External System Release tool

KEY VAULT

KEYVAULT Secrets

API VERSIONING

HOW DO YOU WANT TO VERSION? •/api/foo?api-version=1.0 •/api/foo?api-version=2.0-Alpha •/api/foo?api-version=2015-05-01.3.0 Query String Versioning •/api/v1/foo •/api/v2.0-Alpha/foo •/api/v2015-05-01.3.0/foo URL Path Versioning •accept: text/plain;v=1.0 •content-type: text/plain;v=2.0 Media Type Versioning HTTP Header Versioning

SIMPLE OR COMPLEX

API DOCUMENTATION

OPENAPI (SWAGGER)

QUESTIONS?