![Hello, World!
-module(hello).
-export([start/0]).
start() ->
io:format("Hello, World!~n").](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-79-320.jpg)
![Hello, World!
-module(hello).
-export([start/0, loop/0]).
start() ->
Pid = spawn(hello, loop, []),
Pid ! hello.
loop() ->
receive
hello ->
io:format("Hello, World!~n"),
loop()
end.
From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-80-320.jpg)
![Start
-module(hello).
-export([start/0, loop/0]).
start() ->
Pid = spawn(hello, loop, []),
Pid ! hello.
loop() ->
receive
hello ->
io:format("Hello, World!~n"),
loop()
end.
From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-81-320.jpg)
![Output
-module(hello).
-export([start/0, loop/0]).
start() ->
Pid = spawn(hello, loop, []),
Pid ! hello.
loop() ->
receive
hello ->
io:format("Hello, World!~n"),
loop()
end.
From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-82-320.jpg)
![Process Spawning
-module(hello).
-export([start/0, loop/0]).
start() ->
Pid = spawn(hello, loop, []),
Pid ! hello.
loop() -> New Process
receive
hello ->
io:format("Hello, World!~n"),
loop()
end.
From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-83-320.jpg)
![Blocking Receive
-module(hello).
-export([start/0, loop/0]).
start() ->
Pid = spawn(hello, loop, []),
Pid ! hello.
loop() ->
receive
hello ->
io:format("Hello, World!~n"),
loop()
end.
From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-84-320.jpg)
![Message Passing
-module(hello).
-export([start/0, loop/0]).
start() ->
Pid = spawn(hello, loop, []),
Pid ! hello.
loop() ->
receive
hello ->
io:format("Hello, World!~n"),
loop()
end.
From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-85-320.jpg)
![Pattern Matching
-module(hello).
-export([start/0, loop/0]).
start() ->
Pid = spawn(hello, loop, []),
Pid ! hello.
loop() ->
receive
hello ->
io:format("Hello, World!~n"),
loop()
end.
From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-86-320.jpg)
![Tail Recursion
-module(hello).
-export([start/0, loop/0]).
start() ->
Pid = spawn(hello, loop, []),
Pid ! hello.
loop() ->
receive
hello ->
io:format("Hello, World!~n"),
loop()
end.
From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-87-320.jpg)
![Erlvolt
Insert
erlvolt:callProcedure(Connection, "Insert", ["안녕하세요", "세계", "Korean"]),
Select
Response = erlvolt:callProcedure(Connection, "Select", ["Korean"]),
Row = erlvolt:fetchRow(Table, 1),
io:format("~n~n~s, ~s!~n",
[ erlvolt:getString(Row, Table, "HELLO"),
erlvolt:getString(Row, Table, "WORLD") ]);](https://image.slidesharecdn.com/techplanet2012-voltdbanderlang2-3-x-1-slideshare-121114131747-phpapp02/85/VoltDB-and-Erlang-Tech-planet-2012-93-320.jpg)
VoltDB and Erlang - Tech planet 2012
- 1. VoltDB and Erlang TechPlanet 2012 H. Diedrich http://www.eonblast.com – twitter @hdiedrich
- 2. Your Host Henning Diedrich • Founder, CEO Eonblast • Maintainer of Emysql, Erlvolt
- 3. This Presentation Review With Leasure • Video & Slides will be online at SK planet • Slides will be online at slideshare.net
- 4. Eonblast
- 5. VoltDB and Erlang Open Source Tech for Scale 1. What makes Them Special? 2. How do They Look? 3. Are They For Me?
- 6. Made for a Concrete Need Made for Distribution Made for Multi-Core Truly Different Approaches Based on Parallelism Improving on Previous Solutions Corporate-Created Open Source Professional Support Known by Those in the Know
- 7. The free, scaling, SQL DB Redis + SQL + Scale = VoltDB
- 8. Why VoltDB? Business Perspective • Reduce Costs • Scale Seamlessly • Maintain Strategic Flexibility
- 9. Why VoltDB? Production Perspective • Keep The Good of SQL • Use the Speed of In-Memory • Take Pain out of Scaling
- 10. In-Memory The Redis of clusters • Today good for 100s of GB of data • Sheds 75% of DBM system activity • Made from scratch for distribution • Full disk persistence
- 11. SQL The MySQL of NewSQLs • SQL Has Flaws • Essentially Math, Not Syntax • You'd be missing Queries • VoltDB is even 'more SQL than SQL'
- 12. CAP • Distributed • Consistent • Highly-Available • Partition-Tolerant … have it all! Brewer on CAP 2012: http://www.infoq.com/articles/cap-twelve-years-later-how-the-rules-have-changed
- 13. ACID • Atomicity • Consistency • Isolation • Durability … for granted?
- 14. Double Bookkeeping • Not Every App needs It • Requires ACID Transactions • Neigh Impossible to emulate • Impossible With BASE (Eventual Consistency)
- 15. The Magic • Compiled-In Queries • Single-Thread Execution • Snowflakes & Clones
- 16. Partitions State #
- 17. K Safety 1 State #
- 18. Snowflake Structures FK FK FK PK PK FK FK FK
- 19. Snowflake Structures FK FK FK PK FK FK
- 20. Other Data PK PK PK
- 21. Partitions State # ABC EFG HIJ KLM NOP
- 22. Partitions State # ABC EFG HIJ KLM NOP A-Z A-Z A-Z A-Z A-Z
- 23. Single Thread Execution • One Thread per Partition • One Thread per Transaction • One Thread can't race itself • Main Design Criterion
- 24. Benchmark • Node.js • Amazon EC2 • 64 core node.js clusters + 96 core VoltDB cluster • 695,000 transactions per second (TPS) • 2,780,000 operations per second • 100,000 TPS per 8 core client • 12,500 TPS per node.js core • Stable even under overload • Pretty much linear scale Details: http://voltdb.com/company/blog/695k-tps-nodejs-and-voltdb
- 25. Benchmark TV Contest • Millions of callers • Small set of candidates • Massive peak • One transaction is one vote • Callers are identified by their telephone number • Callers must not be allowed to vote more than once
- 26. Benchmark CREATE TABLE contestants ( contestant_number integer NOT NULL , contestant_name varchar(50) NOT NULL , CONSTRAINT PK_contestants PRIMARY KEY ( contestant_number ) ); CREATE TABLE votes ( phone_number bigint NOT NULL , state varchar(2) NOT NULL , contestant_number integer NOT NULL ); CREATE TABLE area_code_state ( area_code smallint NOT NULL , state varchar(2) NOT NULL , CONSTRAINT PK_area_code_state PRIMARY KEY ( area_code ) );
- 27. Benchmark The Transaction in 4 Operations // Check if the vote is for a valid contestant SELECT contestant_number FROM contestants WHERE contestant_number = ?; // Check if the voter has exceeded their allowed number of votes SELECT num_votes FROM v_votes_by_phone_number WHERE phone_number = ?; // Check an area code to retrieve the corresponding state SELECT state FROM area_code_state WHERE area_code = ?; // Record a vote INSERT INTO votes (phone_number, state, contestant_number) VALUES (?, ?, ?);
- 28. Drivers • Java • C, C++ • node.js • Python • Ruby • Go • Erlang
- 29. • VoltDB, Inc. 2009 – commercial developer, support • Open Source – 100% dictatorial by VoltDB, Inc • Made for OLTP – fast cheap writes, high throughput • CA of CAP – 100% consistent & highly available • Simple SQL – real queries • In-memory – 100x faster than MySQL • ACID transactions – double bookkeeping • Distributed – for painless growth • Linear scale – predictable, low cost • Replication, Snapshots – disk persistence, hot backup • More SQL than SQL – clean separation of data
- 30. Getting Started • Download and Install from voltdb.com • Open Getting Started inside the installation • Run Hello World locally • Read M.I.T. Paper A New Architecture • Watch webinars at voltdb.com • Free Help also from VoltDB staff http://community.voltdb.com/forum • Use EC2 to benchmark your ideas
- 31. Upcoming Blog Post • Looking at 14 databases • Riak, Cassandra, Membase, H-Base, Voldemort, MySQL, MySQL Cluster, Redis, Redis Cluster, Tokyo Cabinet, Memcached, CouchDB, Couchbase, VoltDB, MongoDB, Postgres • In the light of what games need • Unbiased comparison • Twitter @hdiedrich
- 33. Erlang may be to Java what Java was to C++ C++ – pointers = Java Java – deadlocks = Erlang
- 34. Why Erlang? Business Perspective • Reduce Costs • Reduce Downtimes • Shorten Time To Market
- 35. Why Erlang? Production Perspective • High Productivity • Low Hardware Requirements • Fewer Errors
- 36. Who Is using It? “You probably use systems based on Erlang/OTP every day without knowing it.“ Mike Williams
- 37. Erlang Game Servers Zynga: FarmVille via membase, Activision Blizzard: Call of Duty, Bigpoint: Battle Star Galactica, Wooga: Magic Land
- 38. Erlang Poster Childs Klarna AB • Financial Services for E-Commerce • 30 seconds downtime in 3 years Distributed Databases • Membase • Riak • BigCouch
- 39. Sweet Spots • Stateful Servers with High Throughput • Cluster Distribution Layers • Chats
- 40. Origins PLEX • Ericsson makes billions with telecom switches • They used PLEX, an all proprietary software • PLEX delivers, but has bad productivity
- 41. Origins • The 80's: Ericsson Computer Science Lab Joe Armstrong, Robert Virding, Mike Williams „What aspects of computer languages make it easier to program telecom systems?“
- 42. Erlang was Built For • Reliability • Maintenance • Distribution • Productivity
- 43. Concurrency Built In • In the Language, not OS • Easier Testing • Massively Battle-Tested • Closer To Real Problems
- 44. The Magic • Microprocesses • Pattern Matching * • Immutable Variables * Not your familiar Regex string matching
- 45. Thinking Erlang • The Actor Model • Thinking Parallel • Thinking Functional • Thinking Processes • Pattern Matching • Let It Crash!
- 46. The Actor Model Carl Hewitt 1973 • Behavior • State Actor • Parallel • Asynchronous Messages Data Data Code Code • Mailboxes • No Shared State • Self-Contained Machines Object Process Benefits • More true to the real world • Better suited for parallel hardware • Better suited for distributed architectures • Scaling garbage collection (sic!) • Less Magic
- 47. Asynchronous Messages Pid ! Msg Message dispatch is one-way, truly asynchronous. Not function calls but something in their own right. Clean break from the FP paradigm.
- 48. Thinking Processes What should be a Process? Processes “It's easy!” Joe Armstrong • Don’t share State • Communicate Asynchronously • Are Very Cheap to create And keep • Monitor Each Other • Provide Contention Handling • Constitute the Error Handling Atom
- 49. Objects share Threads Multiple objects share threads. Objects can be accessed across threads. Threads - and objects - share state.
- 50. Actors are Processes State, code and process form a unity: the actor. Like processes, actors do not share state. In fact, like humans. Who mostly work quite well.
- 51. Objects and Threads C C++ C# Java JavaScript Node Lua Python
- 52. Objects and Threads Idle Threads
- 53. Objects and Threads Leeroy Jenkins!!! Unwanted surviving objects
- 54. Objects and Threads 2*B || !2*B ? Prematurely destroyed objects
- 55. Erlang Actors Erlang Actors: State + Code + Process
- 56. Erlang Actors One dies.
- 57. Erlang Actors It's restarted.
- 58. Errors propagate Loss of state can affect multiple modules. State errors cross thread boundaries. Defensive code multiplies.
- 59. Objects need Locks Worker 1 Doing X1 Resource Locked Locked Worker 2 Waiting Doing X2 ● System design is disrupted by explicit locks. ● Overly cautious locking slows things down. ● Forgotten locks create errors that show under load.
- 60. Crashed Locks Stall Worker 1 Doing X1 Resource Locked Locked Worker 2 Waiting Doing X2 ● Locks can need cross-thread error handling. ● Stalling and time outs aggravate load.
- 61. Processes are Transactional Do X1 for me! Funnel Doing X1 Doing X2 Do X2 for me! ● One actor is one process, obviously cannot “race itself”. ● Mandating a job type to an actor creates a transactional funnel. ● Only one such job will ever be executing at any one time.
- 62. Thinking Parallel • The Generals’ Problem • Lamport Clocks • No Guarantees “It's not easy.” Robert Virding
- 63. Generals’ Problem State Two generals need to agree when to attack.
- 64. Generals’ Problem State One sends a messenger.
- 65. Generals’ Problem State Acknowledge.
- 66. Generals’ Problem State ACK the ACK. Etc.
- 67. Generals’ Problem State The messenger may get lost.
- 68. Byzantine Generals State The generals, actually, too.
- 69. Lamport Clocks Order matters more than time. Source: Lamport http://research.microsoft.com/users/lamport/pubs/time-clocks.pdf
- 70. Thinking Functional Small Functions + Immutable Variables → Don’t assign variables: return results! Complete State in Plain Sight → Awful for updates in place. → Awsome for debugging & maintenance. Erlang is not side-effect free at all.
- 71. Immutable Variables Can’t assign a second time: A = A + 1. A = 1, A = 2.
- 72. Immutable Variables It has to be: B = A + 1. A = 1, B = 2. ● Prevent Coding Errors ● Provide Transactional Semantic ● Allow For Pattern Matching Syntax ● Can be a Nuisance
- 73. Pattern Matching This can mean two things: A = func(). The meaning depends on whether A is already assigned.
- 74. Pattern Matching The common, mixed case: {ok, A} = func(). ok is an assertion AND A is being assigned.
- 75. Pattern Matching The common, mixed case: {ok, A} = func(). “This makes it hard to give Erlang a syntax like e.g. Lua.” Robert Virding
- 76. Let It Crash! • No Defense Code • On Error, restart Entire Process • Built-In Process Supervision & Restart • Missing Branches, Matches cause Crash → Shorter, Cleaner Code → Faster Implementation → More Robust: handles All Errors
- 77. Syntax ● Small ● Easy ● Stable ● Declarative ● Inspired by Prolog and ML ● Obvious State, Implicit Thread
- 78. Fibonacci Looks like the math description fib(0) -> 0; fib(1) -> 1; fib(N) when N>1 -> fib(N-1) + fib(N-2).
- 79. Hello, World! -module(hello). -export([start/0]). start() -> io:format("Hello, World!~n").
- 80. Hello, World! -module(hello). -export([start/0, loop/0]). start() -> Pid = spawn(hello, loop, []), Pid ! hello. loop() -> receive hello -> io:format("Hello, World!~n"), loop() end. From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html
- 81. Start -module(hello). -export([start/0, loop/0]). start() -> Pid = spawn(hello, loop, []), Pid ! hello. loop() -> receive hello -> io:format("Hello, World!~n"), loop() end. From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html
- 82. Output -module(hello). -export([start/0, loop/0]). start() -> Pid = spawn(hello, loop, []), Pid ! hello. loop() -> receive hello -> io:format("Hello, World!~n"), loop() end. From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html
- 83. Process Spawning -module(hello). -export([start/0, loop/0]). start() -> Pid = spawn(hello, loop, []), Pid ! hello. loop() -> New Process receive hello -> io:format("Hello, World!~n"), loop() end. From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html
- 84. Blocking Receive -module(hello). -export([start/0, loop/0]). start() -> Pid = spawn(hello, loop, []), Pid ! hello. loop() -> receive hello -> io:format("Hello, World!~n"), loop() end. From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html
- 85. Message Passing -module(hello). -export([start/0, loop/0]). start() -> Pid = spawn(hello, loop, []), Pid ! hello. loop() -> receive hello -> io:format("Hello, World!~n"), loop() end. From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html
- 86. Pattern Matching -module(hello). -export([start/0, loop/0]). start() -> Pid = spawn(hello, loop, []), Pid ! hello. loop() -> receive hello -> io:format("Hello, World!~n"), loop() end. From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html
- 87. Tail Recursion -module(hello). -export([start/0, loop/0]). start() -> Pid = spawn(hello, loop, []), Pid ! hello. loop() -> receive hello -> io:format("Hello, World!~n"), loop() end. From Edward Garson's Blog at http://egarson.blogspot.de/2008/03/real-erlang-hello-world.html
- 88. Productivity Motorola Study running 2002 – 2006: “Erlang shows … • 2x higher throughput • 3x better latency • 3 - 7x shorter code … than the equivalent C++ implementation.”
- 89. Erlang • Ericsson AB 1983 – commercial developer, support • Open Source – 100% dictatorial by Ericsson • Professional Support – by veterans at Erlang Solutions • Made for telecom – complexity & robustness • Functional – improves maintainability • Actors Model – better than OO for parallel worlds • Distributed – seemless use of multi-cores • Parallel – Processes as basic building block • Simple Language – Easy to learn and maintain • Huge Library – OTP is made for server development • Battle-tested – billion $ projects, 1 million LOC • Great Community – bright and friendly devs
- 90. Learning Erlang • Scour Post-Mortems • Download and Install from erlang.org • Fred’s site Learn You Some Erlang! • Joe’s book Programming Erlang • IRC #erlounge • Erlang Mailing List • Local Erlounge Meetings • Erlang Factories & User Conferences
- 91. Erlvolt
- 92. Erlvolt • The Erlang VoltDB Driver • Stable Synchronous Version • Upcoming Asynchronous Version https://github.com/Eonblast/Erlvolt
- 93. Erlvolt Insert erlvolt:callProcedure(Connection, "Insert", ["안녕하세요", "세계", "Korean"]), Select Response = erlvolt:callProcedure(Connection, "Select", ["Korean"]), Row = erlvolt:fetchRow(Table, 1), io:format("~n~n~s, ~s!~n", [ erlvolt:getString(Row, Table, "HELLO"), erlvolt:getString(Row, Table, "WORLD") ]);
- 94. Resources Erlang VoltDB Web Download http://www.erlang.org/ http://voltdb.com/products-services/downloads http://learnyousomeerlang.com/ http://www.erlang.org/static/getting_started_quickly.html Webinars http://community.voltdb.com/weninars List Forum http://erlang.org/mailman/listinfo/erlang-questions http://community.voltdb.com/forum http://groups.google.com/group/erlang-programming Voter Example Books https://github.com/VoltDB/voltdb/tree/master/examples/voter http://pragprog.com/book/jaerlang/programming-erlang http://shop.oreilly.com/product/9780596518189.do Benchmark Blog Post http://voltdb.com/company/blog/695k-tps-nodejs-and-voltdb References http://erldocs.com/ Volt’s Magic Sauce http://www.erlang.org/doc/ http://nms.csail.mit.edu/~stavros/pubs/hstore.pdf Post Mortems http://www.facebook.com/note.php?note_id=14218138919 http://www.slideshare.net/wooga/erlang-the-big-switch-in-social-games Erlvolt https://github.com/Eonblast/Erlvolt Eonblast https://www.eonblast.com
- 95. Upcoming • Erlvolt 2 – asynchronous Erlang VoltDB driver • 14 New Databases for Games – Blog Post TBA on Twitter @hdiedrich
- 96. Questions • Email: hdiedrich*eonblast.com • Twitter: @hdiedrich • VoltDB: http://community.voltdb.com/forum • Erlang: [email protected] • Eonblast: http://www.eonblast.com • Game News: @eonblast