The document is about a conference for IT professionals discussing the advantages of in-process vs inter-process communication during application deployment. It highlights the importance of scalability, reliability, and flexibility in designing distributed enterprise applications and outlines strategies for optimizing service communication within such architectures. The presentation includes examples of service interactions and emphasizes the role of isolation in development and deployment.

1. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
Decide Between In-Process or Inter-
Process Communication
at Deploy Time
Florin Coroş
www.infiniswiss.com | www.iquarc.com | onCodeDesign.com
florin.coros@iquarc.com
@florincoros

2. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
Many thanks to our sponsors & partners!
GOLD
SILVER
PARTNERS
PLATINUM
POWERED BY

3. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
About me
@florincoros
Co-Founder & Partner
Co-Founder & Partner
.com

4. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
In-Process / Inter-Process Communication
4
Client Service

5. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
Distributed Large Enterprise Applications
5
Data Data Data
 Scalability
 Reliability
 Availability
 Security
Maintainability 
Testability 
Migrations 
Modernization 

6. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
Simpler Architectures
6
Database
Database
Maintainability 
Testability 
Migrations 
Modernization 
 Scalability
 Reliability
 Availability
 Security

7. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
Performance Degradation Due To Inter-Process Communication
7
Data Data Data
Database
vs
Distributed System Monolith
+ No performance drawbacks due
communication
+ Develop, Test, Maintain and Operate in isolation
+ Scalability, Reliability, Availability, Security

8. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
• Develop, test and maintain in isolation as if each service is hosted
individually
• Load more services in the same process and communicate through
simple function calls
• Decompose the system regardless of deployment and communication
concern
• Decide at deploy time (configs only) which services are loaded in same
process and which communicate outside the process
• FOCUS on DECOMPOSITION and FUNCTIONALITY
Flexible Deployment
8

9. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
DEMO: Example of Dependent Services
9
QuotationService
+ GetQuotations() : Quotations
IQuotationService
OrdersService
+ PlaceSellLimitOrder()
+ PlaceBuyLimitOrder()
+ GetLimitOrders() : LimitOrders
PortfolioService
+ GetPortfolioValue() : decimal
IPortfolioService
IOrdersService

10. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
Individual Deployment
10
IOrdersService
OrdersService
IPortfolioService
PortfolioService IQuotationService
QuotationService
inter-process

11. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
Optimized Deployment for Orders – Quotation Communication
11
IOrdersService
OrdersService
IPortfolioService
PortfolioService
IQuotationService
QuotationService
in-process
inter-process
QuotationService

12. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
Host All in One Process (like a monolith)
12
IOrdersServiceIPortfolioService IQuotationService
QuotationService
in-processin-process
OrdersServicePortfolioService

13. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
How to Achieve This?
13
– Depend only on Contracts implemented in abstract types
– Proxies to forward the contract calls to the actual
implementation
– Type Discovery
Through Design

14. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
https://oncodedesign.com/ITCamp2017
Code Demo
14www.github.com iQuarc Code-Design-Training InterProcessCommunication TradingApp

15. @ITCAMPRO #ITCAMP17Community Conference for IT Professionals
Florin Coroş
Co-founder & Partner, iQuarc www.iquarc.com
Co-founder & Partner, InfiniSwiss
www.infiniswiss.com
.com
email: florin.coros@iquarc.com
blog: onCodeDesign.com
tweet: @florincoros