Tarantool as amicroservicesplatformAnton ReznikovVladimir Perepelitsa

100k+ RPSper cpu core

$1 000 000+comparing to big cluster

What else…

SQL?

Memcached?

Queues?

$$$

Roadmap

RoadmapKV with expiration

RoadmapKV with expiration

Smart caching proxy

RoadmapKV with expiration

Smart caching proxy

Complex queues

RoadmapKV with expiration

Smart caching proxy

Complex queues

Application server

RoadmapKV with expiration

Smart caching proxy

Complex queues

Application server

Custom cluster solutions

Get yourdata in RAM

Computeclose to data

Enjoy theperformance

Average performanceOperation Req / s / CPUSelect: 150kInsert: 75kUpdate: 75kDelete: 90kLuaCall: 75k

Indexes:HASH

Indexes:HASH

TREE: SG, AVL (1.5) | B+* (1.6)

Indexes:HASH

TREE: SG, AVL (1.5) | B+* (1.6)

RTREE (1.6)

Indexes:HASH

TREE: SG, AVL (1.5) | B+* (1.6)

RTREE (1.6)

BITMAP

Indexes:HASH

TREE: SG, AVL (1.5) | B+* (1.6)

RTREE (1.6)

BITMAP

Composite

Indexes:HASH

TREE: SG, AVL (1.5) | B+* (1.6)

RTREE (1.6)

BITMAP

Composite

Multiple

Lua

Luajit!

Luajit!fibers (green threads)Cooperative multitasking

Luajit!fibers (green threads)Cooperative multitasking

channels (fiber communicaion)Synchronization primitives

Luajit!fibers (green threads)Cooperative multitasking

channels (fiber communicaion)Synchronization primitives

sockets (client & server)Pure raw, like in C and with helpers

Luajit!fibers (green threads)Cooperative multitasking

channels (fiber communicaion)Synchronization primitives

sockets (client & server)Pure raw, like in C and with helpers

FFI (foreign function interface)Ability to call C/C++ (dlopen)

8 lines

Lua: join by handfunction custom_join( key ) local result = {}

for tuple in space:iterator('EQ', key) do local joined = other:select(0,tuple[1])

table.insert(result,{ tuple, joined }) end

return resultend

Access tokensProvides access by URL tospecific feature withoutadditional authorization

Durable

Temporary

Consistent

Token

Payload

Token

Payload

index

Lua

TokenExpire time

Payload

fiber

index

Lua

TokenExpire time

User id

Payload

index

fiber fiber

Classic SQL AppWeb application with 20krequests for select and 2krequests for update

Have memcached

Have SQL replica

get

setApp

missMemcache

SQL

App Tarantool

SQL

App Tarantool

SQL

App Tarantool

SQL

App Tarantool

replicaSQLSlave

chanscache

query 1 query SQL

query 2

reply 2

chan

SQL responsereply 1

query 3reply 3

20 lines!

Aggregation: examplefunction select(key) local tuple = cache:select {key} if not tuple then if locks[key] then local ch = fiber.channel(1) locks[key][ch] = ch return ch:get() else locks[key] = {} local ret = sql:execute('select * from ...') for ch in pairs(locks[key]) do ch:put(ret) end locks[key] = nil return ret end else return tuple endend

OAuth tokensStorage for 10M OAuthaccess+refresh tokens withdeadline refreshing

Keep minimal expired tokens

Balance load over time

App WorkerTokens

queueSched

App WorkerTokens

queue

G

MS

Y

Я

Sched

App WorkerTokens

queues

G

MS

Y

Я

Sched

Queue priority

to refresh no need to refreshexpired

60sfirst

order

old agesecondorder 5 min

thirdorder

App WorkerTokens

G

MS

Y

Я

Subscriptionverification

Mobile application providesubscription id, that must beverified in store

Don't duplicate requests

Reply as soon as possible

Provide service if client gone

App

Worker

wait

create task

wait

have task

x3done task

id

Apple

Database applicationReplicated database with a lotof business logic inside

Multiple APIs

Failsafe deploy

Monitoring

Informative logs

App

API

v1

App

Lua

API

v1

App

App

v2

Lua

API

v1

App

App

v2

Lua

logs 

Mon

Stat

world

fiber

Sharding isunavoidable

Data does not fit in RAM of asingle instance or many CPUcores required

Database as a service

Consistency checking

#1

#2

#3

App Sh prxf(k)

App

App Sh prxf(k)

Sh prxf(k)

#1

#2

#3

App Sh prxf1(k)

App

App Sh prxf(k)

Sh prxf(k)

#1

#2??

#3

App Sh prxf(k)

App

App Sh prxf(k)

Sh prxf(k)

#1f(k)

#2f(k)

#3f(k)

App

App

App

Access tokens (v2)Provides access by URL tospecific feature withoutadditional authorization

High availability

Allow loss of majority

M

M

M

APP #1

APP #2

M

M

M

APP #1

APP #2

M

M

M

APP #1

APP #2

Get yourdata in RAM

Computeclose to data

Enjoy theperformance

tarantool.orgDocumentation:

try.tarantool.orgTry it online:

github.com/tarantoolExplore it:

github.com/mons/tnt-luasLuas:

Questions?