Beyond the POCAdopting NServiceBus

Introduction Adam Fyles

Solution Architect

Using NSB since v1.9

NServiceBus Champ

Upstate NY, US

Contact Info

adamfyles.blogspot.com

afyles@gmail.com

The tablescape Regional Grocery Retailer

- Wine & Spirits

- Restaurants

90+ Stores in 6 states

Millions of customers

Medium to large IT department (~250)

Extremely high volume stores

Let me in! Lots of competitive products, why do we need another one?

Batch jobs work just fine!

Lack of SOA understanding

Operations used to FTP

The progression

SagasPub/SubPoint to

PointLoad

Balancing

Load Balancing: OMS Determines how to best source product in the supply chain based on demand

Inherently batch based due to wave planning in either WMS or MFG

Requires massive throughput (by order line item) in a tight window

No commercial system could do it without heavy custom configuration and a ridiculous amount of hardware

Team was experienced PowerBuilder developers

Solution Solution was to decompose orders and optimize by distribution “network”

Run aggregate demand through with the Distributor

Distributor

Worker 1 Worker 2

DB

WMS

Transportation

Publish

Ord

ers

Order Entry

Order Entry

Order Entry

Distributor Demo

Store

Corporate

Supply Chain Proliferation

PurchasedWMS

Integration Endpoint

HTTP

PurchasedCAO

Master DataForecasted

Orders

DataBus

Other Systems

DataBus Customization Demo

Takeaways… Replaying messages!!

Required more DevOps

MSDTC Tricks

Stay inside the stack

Point 2 Point: Mobile Built an entire REST API around all of our Marketing tools Products Recipes Shopping Lists Online Ordering Search Ratings and Reviews

It must be fast and durable!

Request/Response is not an option

Mobile Solution Solution was point to point integration to backend systems of record

FlakyDB

Mobile

API

View ModelReads

Writes

Web

3rd Party

NSB

Writes

Customer Facing Proliferation

API

Reads

RX PortalOffisite Vendor RX

System

WritesNSBWrites

Customer Care

RX Service Desk

Custom Fault Manager Demo

Takeaways… Asynchronous performs well

Messaging trumps fragile backends

Leverage local resources

Pub/Sub: Pricing Legacy Mainframe System

Lots of price changes

Wide Distribution Network All Stores – POS, Scales, Signs Online – Web, mobile, email

Legacy Integration Find the weak point where you can enter the host

Solution

DB

Publisher

Email WebMobile

Signs

Scales

POS

Mainframe

CDC

Workflow: Benefits Registration Series of questions

Plan selection

Open window of opportunity

Solution

Step 1

Step 2

Step 3

Saga Storage

SharePoint Site

NServiceBus

Metrics

Reporting

Takeaways… Don’t reinvent the wheel

Focus on business process

Sum it up!

Efficiency

Focus