Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Game Servers in OTP
Search
Martin Schürrer
July 26, 2014
Programming
9
680
Game Servers in OTP
Given at ElixirConf 2014
Martin Schürrer
July 26, 2014
Tweet
Share
More Decks by Martin Schürrer
See All by Martin Schürrer
Deploying Elixir
msch
3
290
RailsGirls Linz Lightning Talk
msch
0
130
Erlang for Rubyists
msch
4
670
Whirlwind Tour of Erlang
msch
1
270
Other Decks in Programming
See All in Programming
Portapad紹介プレゼンテーション
gotoumakakeru
1
130
令和最新版手のひらコンピュータ
koba789
14
7.9k
実践!App Intents対応
yuukiw00w
1
320
【第4回】関東Kaggler会「Kaggleは執筆に役立つ」
mipypf
0
690
MCPで実現するAIエージェント駆動のNext.jsアプリデバッグ手法
nyatinte
2
110
tool ディレクティブを導入してみた感想
sgash708
1
150
AIエージェント開発、DevOps and LLMOps
ymd65536
1
310
新しいモバイルアプリ勉強会(仮)について
uetyo
1
260
Dart 参戦!!静的型付き言語界の隠れた実力者
kno3a87
0
200
サイトを作ったらNFCタグキーホルダーを爆速で作れ!
yuukis
0
420
ライブ配信サービスの インフラのジレンマ -マルチクラウドに至ったワケ-
mirrativ
1
260
TROCCO×dbtで実現する人にもAIにもやさしいデータ基盤
nealle
0
300
Featured
See All Featured
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
61k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
18
1.1k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
183
54k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
139
34k
Music & Morning Musume
bryan
46
6.7k
Unsuck your backbone
ammeep
671
58k
Side Projects
sachag
455
43k
VelocityConf: Rendering Performance Case Studies
addyosmani
332
24k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
21k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
GitHub's CSS Performance
jonrohan
1031
460k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
Transcript
Game Servers in OTP
@msch featurebranch.com
None
None
None
None
Architecture big-picture The Table-FSM Life of an in-game event Real
world concerns BoldPoker <3 Elixir Lessons Learned & QA
HA keepalived haproxy active Erlang active Erlang standby Erlang standby
PostgreSQL haproxy standby
Erlang active
OTP Apps :cardgame :storage :network :gameserver
:cardgame OTP APP {Table,9} {Table,8} {Table,7} {Table,6}
:network OTP APP WebSocket :cowboy Flash (TCP) :ranch
:storage OTP APP PSQLDBWorker TableIdSequence
:gameserver OTP APP {Player,1} {Player,2} {Player,3}
Architecture big-picture The Table-FSM Life of an in-game event Real
world concerns BoldPoker <3 Elixir Lessons Learned & QA
None
DealCards Knocking DealCards Play Result idle playing
[ {DealCards, [cards_to_deal, :private]}, {Knocking, [5000]}, {DealCards, [cards_to_deal, :private]}, {Negotiation,
[]}, {Play, [contra_enabled: true]}, {Play, []}, {Play, []}, … {Play, []}, {Play, []}, {Result, []} ]
gen_fsm:send_event/2 -----> Module:StateName/2 gen_fsm:send_event/2 -----> Table.playing/2 {:next_state, next_state_name, new_state_data} !
{:stop, reason, new_state_data}
DealCards Knocking DealCards Play Result idle playing
{:next_stage, new_stage_data, new_state_data} ! {:end_game, new_stage_data, new_state_data} ! Table.broadcast_event {:next_state,
next_state_name, new_state_data} ! {:stop, reason, new_state_data} ! GenServer.reply Table.playing/2 -----> DealCards.playing/3
DealCards Knocking DealCards Play Result idle playing
Knocking DealCards Play Result idle playing
DealCards Play Result idle playing
Play Result idle playing {:game_event, …}
Play Result idle playing {:game_event, …}
Architecture big-picture The Table-FSM Life of an in-game event Real
world concerns BoldPoker <3 Elixir Lessons Learned & QA
P1 P2 P3 P4 {Table,9} {Player,1}
P1 P2 P3 P4 {Table,9} {Player,1} Ports
P1 P2 P3 P4 {Table,9} {Player,1}
P1 P2 P3 P4 {Table,9} {Player,1} {:game_event, :must_play_card}
P1 {Table,9} {Player,1} {:game_event, …}
P1 {Table,9} {Player,1} { "type": "mustPlayCard" } {:game_event, :must_play_card} ProtocolJSON.write/1
P1 {Table,9} {Player,1}
P1 {Table,9} {Player,1} { "type": "playACard", "card": "XH" } {:game_event,
{:play_card,{:ten,:hearts}} ProtocolJSON.parse/1
P1 {Table,9} {Player,1} {:game_event, …}
Architecture big-picture The Table-FSM Life of an in-game event Real
world concerns BoldPoker <3 Elixir Lessons Learned & QA
P1 P2 P3 P4 {Table,9} {Player,1}
haproxy active Erlang active Erlang standby Erlang standby
haproxy active Erlang standby Erlang active Erlang standby
:rpc.multicall(GameServer, switch_active, [node()])
P1 P2 P3 P4 {Table,9} P5 P6 P7 old
P1 P2 P3 P4 {Table,9} P5 P6 P7 old
P1 P2 P3 P4 {Table,9} old
P1 P2 P3 P4 {Table,9} old new {TableMigrator,9}
P1 P2 P3 P4 {Table,9} old new {TableMigrator,9}
P1 P2 P3 P4 {Table,9} P5 P6 P7 old new
{TableMigrator,9}
P1 P2 P3 P4 {Table,9} P5 P6 P7 old new
{TableMigrator,9}
P1 P2 P3 P4 {Table,9} P5 P6 P7 old new
{TableMigrator,9}
P1 P2 P3 P4 {Table,9} P5 P6 P7 old new
{TableMigrator,9}
P1 P2 P3 P4 {Table,9} P5 P6 P7 old new
ConnectionProxy {TableMigrator,9}
P1 P2 P3 P4 {Table,9} P5 P6 P7 old new
{TableMigrator,9}
P1 P2 P3 P4 {Table,9} old new {TableMigrator,9}
None
DealCards Knocking DealCards Play Result idle playing
P1 P2 P3 P4 old new {TableMigrator,9} portable_state
P1 2 3 4 old new { portable_state portable_state %{table_id:
9, player_ids: [1,2,3,4], positions: %{1 => 3, 2 => 0, 3 => 1, 4 => 2}, modifications: [:short_hand], last_game_id: 123 }
P1 P2 P3 P4 old new {TableMigrator,9}
old new {TableMigrator,9}
old new {TableMigrator,9}
None
None
old new {TableMigrator,9}
old new {TableMigrator,9} P1
old new {TableMigrator,9} P2 P3 P4 P1
old new {TableMigrator,9} P2 P3 P4 P1 portable_state
old new P2 P3 P4 P1 {Table,9}
None
P2 P3 P4 P1 {Table,9}
Architecture big-picture The Table-FSM Life of an in-game event Real
world concerns BoldPoker <3 Elixir Lessons Learned & QA
All-in! Elixir Rewrite
Why? Extensibility goals stdlib mix ExUnit
:gen_fsm :ets GenServer Supervisor alias :ets, as: ETS
proper Tests send_events(ClientDeviceIDs, ClientIP) -> ?FORALL(Event, event(), ?FORALL(Data, event_data(Event), ...
parse_transform ?
Architecture big-picture The Table-FSM Life of an in-game event Moving
tables across servers BoldPoker <3 Elixir Lessons Learned & QA
Perform en/decoding at the system border P1 { "type": "playACard",
"card": "XH" } {:game_event, {:play_card,{:ten,:hearts}} ProtocolJSON.parse/1 WS
Create your own behaviours for fun better reusability and profit
easier testing {:next_stage, new_stage_data, new_state_data} {:end_game, new_stage_data, new_state_data}
Distributed Erlang makes hard things easy ConnectionProxy
DB failure? We got all data already, so finish the
game, then just store result on disk
Thank you! @msch featurebranch.com