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A Rose By Any Other Name… Monoglot Microservices
Martin Feckie @mfeckieAndy Marks @andee_marks
Background
A B
E
DC
Service Bus
EDA
BC
Point-to-point/Synchronous
Event-driven/Asynchronous
Shopping Cart
Fulfilment
RESTful JSON over HTTP(S)
Organised around
business capabilities
Productsnot
projects
Smart
endpoints and
dumb pipes
Decentralised governance
Decentralised data
management
Infrastructureautomation
Design for failure
Evolutionary design
Componentisationvia services
http://martinfowler.com/articles/microservices.html
Smart endpoints and dumb
pipes
Shopping Cart
Fulfilment
Golang
Scala
Organised around
business capabilities
Productsnot
projects
Smart endpoints and dumb
pipes
Decentralised
governance
Decentralised data
management
Infrastructureautomation
Design for failure
Evolutionary
design
Componentisationvia services
http://martinfowler.com/articles/microservices.html
Evolutionary design
Decentralised governance
⇒ ?❌Polyglot❌HTTP
❌Polyglot❌HTTP
Design failure↑ for
Design for failure
Shopping Cart
public void save(){
try {
db.persist(this);
} catch (Exception ex){
ex.printStacktrace();
// That should fix it!
}
}
BANG!
Shopping Cart
public void save(){
try {
db.persist(this);
} catch (SQLNonTransientException ex){
// Authentication failure, etc.
} catch (SQLTransientException ex){
// Timeout, etc.
} catch (SQLRecoverableException ex){
// Connection reset, etc.
} catch (Exception ex){
ex.printStacktrace();
}
}
BANG!
A B
E
DC
BANG!
BANG!BANG!
BANG!
A B
E
DC
P(F) = 0.0000009
A B
E
DC
P(F) = 0.000045
P(F) = 0.000020P(F) = 0.000020
P(F) = 0.00000317
P(F) = 0.0000312
P(F) = 0.0000007
P(F) = 0.0000098P(F) = 0.0000014
[P(F) = Probability of Failure]
A B
EP(F) = 0.000045
P(F) = 0.000020
P(F) = 0.00000317
P(F) = 0.0000312
P(F) = 0.0000007
P(X or Y) = P(X) + P(Y)
Design for
failure
HorizontalScaling
Observability
RecoveryDiscovery
Design for
failure
HorizontalScaling
Observability
RecoveryDiscovery
Design
for
failure
Horizontal
Scaling
ribbon
Design for
failure
HorizontalScaling
Observability
RecoveryDiscovery
Design
for
failure
Discovery
eureka
Design for
failure
HorizontalScaling
Observability
RecoveryDiscovery
Design
for
failure
Observabi
lity
http://zipkin.io/
Design for
failure
HorizontalScaling
Observability
RecoveryDiscovery
AA
AAA B
E
DC
AA
AAA B
E
DC
Kafka
DNS
Design for
failure
HorizontalScaling
Observability
RecoveryDiscovery
The OTP
Conclusion
❌Polyglot❌HTTP
Design failure↑ for
A B
E
DC
Service Bus
EDA
BCA B
A
B
Thanks!Martin Feckie @mfeckie
Andy Marks @andee_marks
