IDL - interface definition language - swagger?
Components - don’t know what’s remote
SOA - make it being remote explicit
Microservices - bounded contexts, eventual consistency
Hard to let go of understanding everything
QA - just test the contract of each service, not the whole system - reduces problems caused by configuration problems
Don’t make services too small (Nanoservices) - can lead to too many changes in lots of places, latency (caching helps)
Monolith - staccato delivery
Break it up as each developer/team can only internalise so much
Embrace Conway’s law - check the long version of this
Eventual consistency - 2 phase commit doesn’t scale
Shared data - one source of truth, but can share out a “version” of the data
Try to avoid sharing dependencies, i.e. DTOs - duplicate theme
Enterprise service bus - becomes smart network, hard to test, locked in to vendor - keep the logic in the services instead
Anti-corruption layer for legacy code
Documentation driven design
REST in practice - reference data - ATOM feeds, very cacheable
Could use EventStore for the feed - then services poll the event feed - like a queue of orders in a restuarant
Versioning?
What about having a single API to cover everything?
Steps:
- Break up into bounded contexts
- Ubiquitous language
Brighter
Paramore
Hexaganol architecture
Deploying:
Monitoring
DNS SD & SRV records - difficult to manage, so Zookeeper/etcd etc better
Consul
Akka.NET
Concurrency
Everything is an actor
3 Core Abilities of an actor
- Send messages
- Create other actors
- Change behaviour
Location transparency (same code in different locations)
But URLs do have machine names in them
ReactiveManifesto.org
Switchable behaviour
Akka.net web crawler
Lighthouse (dedicated seed node)
Dead letters
Push dangerous calls down to children
Supervision directives
Functional programming in F#
fsharpforfunandprofit.com
Types are sets and are composable
Algebraic types
Function oriented
Expressions
Pattern matching
No ==, use let for assignment otherwise it will compare
pure - no side effects
Pipeline more logical than nesting paranthesis
Currying - one input, then returns a function taking another input??
HOFs - parameterise all the things
PowerShell DSC
DSC not just a Microsoft/PowerShell standard
AWS $userdata
Pull server
Generates MOF file
“WMI Tester”
DSC resource kit - lots of modules!
The DSC book
Also see Chef’s site
Microsoft DSC Resource Kit
Check git repo for slides etc
Keynote - Why I’m not leaving .NET!
ASP.NET 5: How to Get Your Cheese Back
Visual Studio & .NET on OS-X, Linux, and Windows
Going Further with ASP.NET 5
Complete Code Craft
Introduction to RabbitMQ & EasyNetQ
tryrabbitmq.com
EasyNETMQ
Knowing what went bump in Production - modern monitoring in .net
Seyren
Grafana
nxlog community edition
200GB/day of logs
How big is the cluster?
13 months retained
Scheduled health checks
statsd
embedded checks - config missing etc
HipChat
Move reads from writes
Correlation IDs
Reactive-interactive approaches to visualization of F# jobs
- Reactive-interactive approaches to visualization of F# jobs — SkillsCast
- Akka.NET Fundamentals — prognet15 slides