Erlang/OTP 㨠ejabberd を活用ã—㟠Nintendo Switch(TM)å‘㑠プッシュ通知システム「NPNSã€ã® 開発事例
ä»»å¤©å ‚ ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚·ã‚¹ãƒ†ãƒ 部 ã‚ãŸãªã¸ã‚™ ãŸã„よㆠ渡邉 大洋 ç§ãŸã¡ã¯ã€å®¶åºç”¨ã‚²ãƒ¼ãƒ æ©Ÿ Nintendo Switch (TM) å‘ã‘ã«ã€ãƒ—ッシュ通知ã®ã‚·ã‚¹ãƒ†ãƒ 「Nintendo Push Notification Service (NPNS)ã€ã‚’開発・é‹ç”¨ã—ã¦ã„ã¾ã™ã€‚ NPNS ã«ã¯å¸¸â€¦
NPNS ã«ãŠã‘ã‚‹ Erlang/OTP
Erlang & Elixir Fest 2019 ã§ä»»å¤©å ‚ã•ã‚“ã®ç™ºè¡¨ã«ã¤ã„ã¦ã€æ‡‡è¦ªä¼šã§è©±ã›ã‚‹ç¯„囲ã§ãŠæ•™ãˆã¦ã„ãŸã ã„ãŸã“ã¨ãªã©ã‚’交ãˆã¦ã€Erlang/OTP を利用ã—ã¦ãƒ‘ッケージ製å“を開発ã—ã¦ã„るプãƒã‚°ãƒ©ãƒžãƒ¼è¦–点ã§è¦‹ã¦ã„ãã¾ã™ã€‚残念ãªãŒã‚‰é‹ç”¨ã«ã¤ã„ã¦ã¯æœªçµŒé¨“ã®ãŸã‚ã€ãã®è¾ºã‚Šã¯è§¦ã‚Œã¾ã›ã‚“。 ã¾ãŸè‡ªåˆ†ãŒ XMPP ã¨ã„ã†ãƒ—ãƒãƒˆã‚³ãƒ«ã¯ãªã‚“ã¨ãªã知ã£ã¦ã„るレベルã¨ã„ã†ã“ã¨ã‚‚ã‚ã‚Šã€XMPP 自体ã«ã¯è¸ã¿è¾¼ã¿ã¾ã›ã‚“。 XMPP/ejabberd ã¨ã„ã†é¸æŠžå½“ãŸã‚Šå‰ã§ã™ãŒãƒ—ッシュ通知をé€ã‚‹ã«ã¯ TCP/IP ã®æŽ¥ç¶šã‚’ç¶æŒã™ã‚‹ã¨ã„ã†æ–¹é‡ã«ãªã‚Šã¾ã™ã€‚ãã®ä¸Šã€å°†æ¥çš„ã«ã¯ 1 億を目指ã—ã¦è¡Œãã‚ã‘ã§ã™ã€‚ TCP ã®å¸¸æ™‚接続ãŒçµŒé¨“ãªã„ä¸ã§ 1 å„„åŒæ™‚接続を目指ã™éš›ã®æŠ€è¡“é¸å®šã§ã€è‡ªä½œãƒ—ãƒãƒˆã‚³ãƒ«ã«è¡Œã‹ãšã€ 枯れã¦ã„ã‚‹ XMPP ã¨ã„ã†é¸æŠžã‚’ã—ãŸã®ã¯æœ¬å½“ã«ç´ 晴らã—ã„ã¨æ€ã„ã¾ã™ã€‚ ã¾ãŸã€ãã‚“ãªä¸ã§å®Ÿç¸¾ãŒã‚ã‚‹ ejabbe
(LFE:Lisp Flavoured Erlang)
LFE comes with a powerful REPL, supporting interactive development (including writing macros!) as well as running scripts or even evaluating arbitrary LFE code via the command line. lfe> (== 42 #b101010) true lfe> (integer_to_list 42 2) "101010" lfe> #\a 97 lfe> "regular string" "regular string" lfe> #"binary string" #"binary string" Note that in LFE and Erlang a string is really just a list of in
The Elixir programming language
All Elixir code runs inside lightweight threads of execution (called processes) that are isolated and exchange information via messages: current_process = self() # Spawn an Elixir process (not an operating system one!) spawn_link(fn -> send(current_process, {:msg, "hello world"}) end) # Block until the message is received receive do {:msg, contents} -> IO.puts(contents) end Due to their lightweigh
所謂オブジェクト指å‘言語ã¯ã‚ªãƒ–ジェクト指å‘ã—ã¦ãªã„ã‚“ã˜ã‚ƒãªã„ã‹ã¨ã„ã†ãªã«ã‹ - ã«ã‚ƒã¯ã¯ãƒ¼
※ãƒã‚¿ã§ã™ã€‚マジレスã—ãªã„様㫠※é‡ãã¦è¨€ã„ã¾ã™ãŒãƒã‚¿ã§ã™ã€‚ ※ãªã‚“ã©ã‚‚ã„ã„(ry ã¾ãšã¯ http://b0r0nji.blogspot.com/2011/12/blog-post.html ã‚’èªã‚“ã§ãã ã•ã„。 ã“ã®èª¬æ˜Žã§ã‚ªãƒ–ジェクト指å‘ã‚ã‹ã£ãŸï¼ã£ã¦ãªã£ãŸã‚‰ãã‚Œã©ã†ãªã‚“ã ã‚ã†ã¨æ€ã£ã¦ã—ã¾ã£ãŸã‚ã‘ã§ã™ã€‚ã§ã€ã‚ªãƒ–ジェクト指å‘プãƒã‚°ãƒ©ãƒŸãƒ³ã‚° - Wikipediaèªã‚“ã§ã¿ã‚‹ã¨ã€ 相互ã«ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ (message) ã‚’é€ã‚Šã‚ã†ã‚ªãƒ–ジェクト (object) ã®é›†ã¾ã‚Šã¨ã—ã¦ãƒ—ãƒã‚°ãƒ©ãƒ を構æˆã™ã‚‹æŠ€æ³•ã§ã‚る。 ã»ã†ã€ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã¨ãªã€‚ã•ã¦ã€å…ˆã®èª¬æ˜Žã«ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒã‚ã£ãŸã‹ï¼Ÿã¨ãªã‚‹ã‚ã‘ã§ã™ã€‚ オブジェクトã¨ã¯ãªã«ã‹ 多ãã®OOPをサãƒãƒ¼ãƒˆã—ã¦ã„ã‚‹ã¨è¬³ã£ã¦ã„る言語ã¯ã“ã®ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã®é€å—ä¿¡(Message Passing)をメンãƒå‘¼ã³å‡ºã—ã¨ã„ã†å½¢ã«ç½®ãæ›ãˆã¦ã€æ¦‚念的ã«ã¯ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã‚’é€ã‚Šåˆã£ã¦é€šä¿¡ã—ã¦ã„るよã†
Er.js: Erlang-in-JavaScript
About Er.js piggybacks on Neil Mix’s Thread.js which fakes threading in JavaScript 1.7 using coroutines and nested generator continuations. The goal is to replicate Erlang’s concurrent lockless process model and message-passing APIs in JavaScript. Running Concurrently Running a JavaScript function in the background is easy with Er.js: Er.spawn(myBackgroundFunction); Er.spawn starts a new Er.js pro
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Google Code Archive - Long-term storage for Google Code Project Hosting.
Erlang's Mnesia - a distributed DBMS for highly scalable apps
Google Code Archive - Long-term storage for Google Code Project Hosting.
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