2. Safe Harbor Statement
The following is intended to outline the general direction of VMware's offerings. It is intended for
information purposes only and may not be incorporated into any contract. Any information regarding
pre-release of VMware offerings, future updates or other planned modifications is subject to ongoing
evaluation by VMware and is subject to change. This information is provided without warranty or any kind,
express or implied, and is not a commitment to deliver any material, code, or functionality, and should not
be relied upon in making purchasing decisions regarding VMware's offerings. These purchasing decisions
should only be based on features currently available. The development, release, and timing of any features
or functionality described for VMware's offerings in this presentation remain at the sole discretion of
VMware. VMware has no obligation to update forward looking information in this presentation.
5. Fallacies of Distributed Computing
• The network is reliable.
• Latency is zero.
• Bandwidth is infinite.
• The network is secure.
• Topology doesn't change.
• There is one administrator.
• Transport cost is zero.
• The network is homogeneous.
https://web.archive.org/web/20071223073932/http://java.sys-con.com/read/38665.htm 5

6. 12 Factor Apps https://12factor.net
1.Code in VCS
2.Dependencies
3.Config in environment
4.Backing Services
5.Build, release, run
6.Process
6

7.Port binding
8.Concurrency
9.Disposability
10.Dev/prod parity
11.Logs
12.Admin processes
See also the 1 Factor App and 15 Factor Apps
9. Spring Cloud Config Server
● Pluggable
○ Git
○ Vault
○ Credhub
○ JDBC
○ IaaS resource (S3, etc…)
● Retry
● Spring Boot compatible client
9
10. Spring Cloud Consul Config
● Bring your own Consul
● Uses key-value store
● Can be on value per key or a file per key
● Can be auto-refreshed
● Spring Boot compatible client
1
0
11. Others
● Spring Cloud Vault
● Spring Cloud Zookeeper Config
● Direct to IaaS
○ Spring Cloud Alibaba
○ Spring Cloud AWS
○ Spring Cloud Azure
○ Spring Cloud GCP
● Platform
○ K8s config maps
1
1
13. Netflix Eureka
● Provided by Spring Cloud Netflix
● Highly Available
● Eventually Consistent
● Netflix uses Spring Cloud Netflix!
http://techblog.netflix.com/2012/09/eureka.html
1
3
14. Consul by Hashicorp
● Integration by Spring Cloud Consul
● Bring your own Consul Servers
● Can be strongly consistent
● Uses Services API
● Supports consul health checks
● Spring Boot compatible client
1
4
24. Spring Cloud Gateway
● API Gateway
● Spring Boot App
● Focus on developer experience and customization
● Supports Spring Cloud
○ Configuration
○ Service Discovery
○ LoadBalancer
○ Retry/Circuit Breaker
○ Rate Limiting
○ Sleuth
2
4
25. User Service
(SC Circuit
Breaker)
Sample Architecture with Spring Cloud
Spring Cloud
Gateway
(SC CircuitBreaker,
Retry)
Metrics
Eureka
Service
Discovery
Fraud
Verifier
Spring Cloud
Config Server
Card Application
Service
(SC LoadBalancer)
28. More to Spring Cloud
● Spring Cloud Bus
● Spring Cloud OpenFeign
● Spring Cloud Contract
● Spring Cloud Function
● Spring Cloud Stream
● Spring Cloud Task
● Spring Cloud Data Flow
● ...
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