Practical Look at Erlang
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Hamidreza Soleimani Practical Look at Erlang Concurrent, Fault Tolerant and Distributed Programming Language Tehran Linux User Group February 18, 2014
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Transcript of Practical Look at Erlang
Hamidreza Soleimani
Practical Look at Erlang
Concurrent, Fault Tolerant and Distributed Programming Language
Tehran Linux User Group
February 18, 2014
Strong Typing
Functional
Garbage CollectedRuntime System
Erlang Birthday: 1986
History & Philosophy
Fault Tolerant DistributedConcurrent
History & Philosophy
1. Concurrent
Sequential
Concurrent
Parallel
1. Concurrent
Hamid RezaMajid
Actor ModelAsync / Sync
ImmutableNo Race Condition
Reenterancy Light Process
HiHi
Fine?
Hi
Fine!
Hi
Light
Hi
Wear
2. Fault Tolerant
CorrectiveDefensive
“ Let it crash! ”“ Try to survive! ”
2. Fault Tolerant
In Failure
“ Doesn't Need Restart ”“ Needs Restart ”
Human
Hot Swapping Feature Example: Apache Example: Yaws
3. Distributed
LoadBalancer
N1
N 4
N 3
N 2
N1
N 4
N 3
N 2
N1
N 4
N 3
N 2 Zone 2
Zone 3
Zone 1
ReliabilityScalability
Performance
No Single Point of Failure
3. Distributed
epmdNode 1Hamid
Port: 4369
Node 2Majid
Port: 42042Port: 42043
Erlang Port Manager DaemonErlang Distributed Protocol
No Need to IDL
