high performance web applications @ minted - slides
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High Performance Web ApplicationsJune 21st, 2017
latency
latency
task task task task taskt
throughput
t
task task task task task
ad-infinitum?
task task task task taskt
throughput
task task task task task
task task task task task
throughput = concurrency ÷ latency
time
request rate
capacity
demand
time
request rate
queueing
demand
time
request rate
queue size
time
request rate b
usy workers
time
request rate
latency
time
request rate
queue size
slow
errorsslowing
throughput = concurrency ÷ latency
How do we decrease latency?
How do we decrease latency?Do less things
Do less things
1. Do it later
Do less things
1. Do it later (with celery)
Do less things
1. Do it later (with celery)
2. Do it once
Do less things
1. Do it later (with celery)
2. Do it once (with caching)
How do we increase concurrency?
How do we increase concurrency?minimize dependencies and scale
Determine exactly what you need to complete your tasks.
multithreading vs multiprocessing
process
multithreading vs multiprocessing
t1
memory
t2 t3 t4 t5
master thread
multithreading vs multiprocessing
t1
m1
p1
t1
m1
p1
t1
m1
p1
t1
m1
p1
t1
m1
p1
master process
memory
master thread
app-worker
process mastering
thread
memory
master process
memory
master process
app-worker
thread
memory
app-worker
thread
memory
app-worker
thread
memory
network socket
Inter-process communication
container
app-worker
containerization
thread
memory
network socket
Inter-process communication
container
app-worker
thread
memory
container
app-worker
thread
memory
network socket network socket
throughput = concurrency ÷ latency
let’s go code something
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