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DIY Async Message Pump
Lessons from the trenches
BackFront
WCF Services Windows Service
DMZ Backend
Storage
ADO.NETRPC
Refund / Query Read / Write
DB Cluster
The RPC callstack of
praise the lords of
messaging
Back
Front
WCF Services
Windows Service
DMZ Backend
Storage
ADO.NET
Read / Write
Queues
DB Cluster
Messaging Cluster
Cache Subscriber
Query
Build
or
Buy
Back
Front
WCF Services
Windows Service
DMZ Backend
Storage
ADO.NET
Read / Write
Queues
DB Cluster
Messaging Cluster
Cache Subscriber
Query
Sending
Receiving
Publishing
Building the
var (payload, headers)= Serialize(message);
await queue.Send(payload, headers);
Easy!
TPL handwaving
Cooporative cancellation 101
Async / Await
Ship it!
It worked until
Rush hour
Pump Handler
concurrency
Let’s throw in some
Just a tiny change…
Introduce Fire & Forget
Ship it!
It worked until
Rush hour
Pump Storage
DB Cluster
concurrency
Better limit
Semaphore controls floodgate
Ship it!
It worked
As time passes
flextensible
Make it
https://www.americanroadmagazine.com/forum/gallery/image/1754-crazy-car-hi-res/https://www.ala.co.uk/connect/top-10-crazy-cars/
transactions
Life beyond
Destination2
Storage
Pump
Tx Start
Tx Commit / Abort
Destination1
Your Code
Destination2
Storage
Pump
Tx Start
Tx Commit / Abort
Destination1
Your Code
Destination2
Storage
Pump
Tx Start
Tx Commit / Abort
Destination1
Failed
Successful
Destination2
Storage
Pump
Tx Start
Tx Commit / Abort
Destination1
Your Code
Cloudy with a chance of
ailur
e
Pump Handler
Destination2
Storage
Pump
Tx Start
Tx Commit / Abort
Destination1
Your Code
D1 D2
Penny Pinching
basic bits
Now we have the
Living on the edge of sanity
Sorry pal but we got a problem in prod.
Should I call your spouse or will you?
insights
I want
Sure you can do surgery on yourself
What could go wrong...
Thanks
go.particular.net/
nsbstart
go.particular.net/demo
github.com/danielmarbach/MessagePump
Slides, Links…
Q & A
Software Engineer
Enthusiastic Software Engineer
Microsoft MVP
@danielmarbach
particular.net/blog
planetgeek.ch
Thanks

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DIY Async Message Pump: Lessons from the trenches