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WAKE UP KIDS! Saturday, October 20, 12

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Ruby sucks Saturday, October 20, 12

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Ruby - sometimes - sucks Saturday, October 20, 12

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nu7hatch Poteland @ @ @ @ Saturday, October 20, 12

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Saturday, October 20, 12

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Saturday, October 20, 12

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Saturday, October 20, 12

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Saturday, October 20, 12

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We love Ruby Saturday, October 20, 12

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but let’s be honest Saturday, October 20, 12

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We are using it everywhere Saturday, October 20, 12

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the Right tool for the job We should have fucking shotguns for this shit Saturday, October 20, 12

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RUBY SUCKS AT CONCURRENCY Saturday, October 20, 12

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CONCURRENCY vs. PARALLELISM Saturday, October 20, 12

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CONCURRENCY Saturday, October 20, 12

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PARALLELISM Saturday, October 20, 12

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RUBY SUCKS AT ANY HIGH PERFORMANCE COMPUTING Saturday, October 20, 12

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... LIKE IMAGE PROCESSING Saturday, October 20, 12

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... CLUSTERING Saturday, October 20, 12

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... AND SOMETIMES EVEN HIGH LOAD WEBSERVICES Saturday, October 20, 12

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ALTERNATIVES? Saturday, October 20, 12

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C - extensions Saturday, October 20, 12

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FAST... OBVIOUSL Y Saturday, October 20, 12

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HARD TO MAINTAIN Saturday, October 20, 12

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SOMETIMES SEGV... Saturday, October 20, 12

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...AND STILL NOT PARALLEL AT ALL Saturday, October 20, 12

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CONCURRENCY IN RUBY Saturday, October 20, 12

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Celluloid Saturday, October 20, 12

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THE ACTOR PATTERN Saturday, October 20, 12

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class Jackson include Celluloid def initialize(name) @name = name end def set_status(status) @status = status end def report "#{@name} is #{@status}" end end Saturday, October 20, 12

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>> samuel = Jackson.new "Samuel L Jackson" => # >> samuel.set_status "nervous" => "nervous" >> samuel.report => "Samuel L Jackson is nervous" # This is when motherfuckers get shot. >> samuel.async.set_status "asynchronously nervous" => nil >> samuel.report => "Samuel L Jackson is asynchronously nervous" Saturday, October 20, 12

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>> samuel = Jackson.new "Samuel L Jackson" => # >> samuel.set_status "nervous" => "nervous" >> samuel.report => "Samuel L Jackson is nervous" # This is when motherfuckers get shot. >> samuel.async.set_status "asynchronously nervous" => nil >> samuel.report => "Samuel L Jackson is asynchronously nervous" Saturday, October 20, 12

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>> samuel = Jackson.new "Samuel L Jackson" => # >> samuel.set_status "nervous" => "nervous" >> samuel.report => "Samuel L Jackson is nervous" # This is when motherfuckers get shot. >> samuel.async.set_status "asynchronously nervous" => nil >> samuel.report => "Samuel L Jackson is asynchronously nervous" Saturday, October 20, 12

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>> samuel = Jackson.new "Samuel L Jackson" => # >> samuel.set_status "nervous" => "nervous" >> samuel.report => "Samuel L Jackson is nervous" # This is when motherfuckers get shot. >> samuel.async.set_status "asynchronously nervous" => nil >> samuel.report => "Samuel L Jackson is asynchronously nervous" Saturday, October 20, 12

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>> samuel = Jackson.new "Samuel L Jackson" => # >> samuel.set_status "nervous" => "nervous" >> samuel.report => "Samuel L Jackson is nervous" # This is when motherfuckers get shot. >> samuel.async.set_status "asynchronously nervous" => nil >> samuel.report => "Samuel L Jackson is asynchronously nervous" Saturday, October 20, 12

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Fire and forget Saturday, October 20, 12

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Futures Saturday, October 20, 12

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>> future = samuel.future.report => # >> future.value => "Samuel L Jackson is nervous" >> future = Celluloid::Future.new { 2 + 2 } => # >> future.value => 4 Saturday, October 20, 12

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>> future = samuel.future.report => # >> future.value => "Samuel L Jackson is nervous" >> future = Celluloid::Future.new { 2 + 2 } => # >> future.value => 4 Saturday, October 20, 12

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Pools Saturday, October 20, 12

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class MyWorker include Celluloid def add_one(number) # roflscale computation goes here number + 1 end end pool = MyWorker.pool(size: 9000, args: [:foo, :bar, :baz]) i_am_three = pool.add_one(2) (0..10).to_a.map { |n| pool.future(:add_one, n) } Saturday, October 20, 12

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class MyWorker include Celluloid def add_one(number) # roflscale computation goes here number + 1 end end pool = MyWorker.pool(size: 9000, args: [:foo, :bar, :baz]) i_am_three = pool.add_one(2) (0..10).to_a.map { |n| pool.future(:add_one, n) } Saturday, October 20, 12

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class MyWorker include Celluloid def add_one(number) # roflscale computation goes here number + 1 end end pool = MyWorker.pool(size: 9000, args: [:foo, :bar, :baz]) i_am_three = pool.add_one(2) (0..10).to_a.map { |n| pool.future(:add_one, n) } Saturday, October 20, 12

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class MyWorker include Celluloid def add_one(number) # roflscale computation goes here number + 1 end end pool = MyWorker.pool(size: 9000, args: [:foo, :bar, :baz]) i_am_three = pool.add_one(2) (0..10).to_a.map { |n| pool.future(:add_one, n) } Saturday, October 20, 12

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one thing though... Saturday, October 20, 12

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MRI @ ? Saturday, October 20, 12

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global Lock interpreter Saturday, October 20, 12

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... NO REAL PARALLELISM Saturday, October 20, 12

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What to do? Saturday, October 20, 12

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rubinius and jruby Saturday, October 20, 12

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rubinius Saturday, October 20, 12

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rubinius Actual parallel threads Saturday, October 20, 12

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rubinius Actual parallel threads built with ruby Saturday, October 20, 12

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rubinius Actual parallel threads built with ruby We all love it Saturday, October 20, 12

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Rubinius Saturday, October 20, 12

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Rubinius compatibility PROBLEMS Saturday, October 20, 12

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Rubinius compatibility PROBLEMS not production ready Saturday, October 20, 12

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JRUBY Saturday, October 20, 12

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JRUBY REAL PARALLELISM Saturday, October 20, 12

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JRUBY REAL PARALLELISM access to java libraries! Saturday, October 20, 12

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JRUBY REAL PARALLELISM access to java libraries! Fairl y good performance Saturday, October 20, 12

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JRUBY Saturday, October 20, 12

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JRUBY must Marry java Saturday, October 20, 12

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JRUBY must Marry java compatibility PROBLEMS Saturday, October 20, 12

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TRUL Y CONCURRENT STUFF... Saturday, October 20, 12

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A LITTLE BIT OF HISTORY Saturday, October 20, 12

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ADA Saturday, October 20, 12

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TASK BASED CONCURRENCY Saturday, October 20, 12

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OCCAM Saturday, October 20, 12

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Communicating SEQUENTIAL PROGRAMMING Saturday, October 20, 12

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CLIK Saturday, October 20, 12

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SPAWN and SYNC Saturday, October 20, 12

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PLAN9 Saturday, October 20, 12

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ALEF Saturday, October 20, 12

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LIMBO Saturday, October 20, 12

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MESSAGE PASSING Saturday, October 20, 12

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THAT’s ENOUGH Saturday, October 20, 12

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TIME TO GET SERIOUs Saturday, October 20, 12

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ERLANG Saturday, October 20, 12

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MESSAGE PASSING CONCURRENCY Saturday, October 20, 12

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NOT ONL Y A LANGUAGE Saturday, October 20, 12

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AN ECOSYSTEM FOR DISTRIBUTED APPS Saturday, October 20, 12

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ONL Y FOR THE PROS Saturday, October 20, 12

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TIME TO GO Saturday, October 20, 12

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MESSAGE PASSING DONE RIGHT Saturday, October 20, 12

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GO IN 5 MINUTES Saturday, October 20, 12

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SYNCHRONIZE YOUR WATCHES Saturday, October 20, 12

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BASICS Saturday, October 20, 12

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package main import "fmt" import uuid "github.com/nu7hatch/gouuid" import ( "fmt" uuid "github.com/nu7hatch/gouuid" ) func main() { // *snip* } Saturday, October 20, 12

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package main import "fmt" import uuid "github.com/nu7hatch/gouuid" import ( "fmt" uuid "github.com/nu7hatch/gouuid" ) func main() { // *snip* } Saturday, October 20, 12

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package main import "fmt" import uuid "github.com/nu7hatch/gouuid" import ( "fmt" uuid "github.com/nu7hatch/gouuid" ) func main() { // *snip* } Saturday, October 20, 12

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package main import "fmt" import uuid "github.com/nu7hatch/gouuid" import ( "fmt" uuid "github.com/nu7hatch/gouuid" ) func main() { // *snip* } Saturday, October 20, 12

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package main import "fmt" import uuid "github.com/nu7hatch/gouuid" import ( "fmt" uuid "github.com/nu7hatch/gouuid" ) func main() { // *snip* } Saturday, October 20, 12

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FUNCTIONS Saturday, October 20, 12

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func IDoNothingWrong() { } func PrintMotherfucker(something string) { fmt.Println(something + " motherfucker!") } func PrintMoreMotherfuckers(one, two string, three int) { fmt.Printf("%s, %s, %d motherfucker!\n", one, two, three) } func PrintAllTheThings(args ...string) { fmt.Println(args...) } Saturday, October 20, 12

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func IDoNothingWrong() { } func PrintMotherfucker(something string) { fmt.Println(something + " motherfucker!") } func PrintMoreMotherfuckers(one, two string, three int) { fmt.Printf("%s, %s, %d motherfucker!\n", one, two, three) } func PrintAllTheThings(args ...string) { fmt.Println(args...) } Saturday, October 20, 12

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func IDoNothingWrong() { } func PrintMotherfucker(something string) { fmt.Println(something + " motherfucker!") } func PrintMoreMotherfuckers(one, two string, three int) { fmt.Printf("%s, %s, %d motherfucker!\n", one, two, three) } func PrintAllTheThings(args ...string) { fmt.Println(args...) } Saturday, October 20, 12

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func IDoNothingWrong() { } func PrintMotherfucker(something string) { fmt.Println(something + " motherfucker!") } func PrintMoreMotherfuckers(one, two string, three int) { fmt.Printf("%s, %s, %d motherfucker!\n", one, two, three) } func PrintAllTheThings(args ...string) { fmt.Println(args...) } Saturday, October 20, 12

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CONSTANTS Saturday, October 20, 12

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const foo = 1 const ( one = iota two three four ) Saturday, October 20, 12

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const foo = 1 const ( one = iota two three four ) Saturday, October 20, 12

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VARIABLES Saturday, October 20, 12

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var ( name string age int = 32 ) func IDoNothingWrong() { var name string age := 32 // *snip* } Saturday, October 20, 12

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var ( name string age int = 32 ) func IDoNothingWrong() { var name string age := 32 // *snip* } Saturday, October 20, 12

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- Go will never get popular... - Porque? - Languages with := never get popular. Saturday, October 20, 12

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CONDITIONS Saturday, October 20, 12

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if vince.IsOutOfTheToilet() { // kill the bastard! } else { // stay cool... } // WROOOONG! if mia.IsOverdosed() vince.ApplyAdrenalineTo(mia) if vince, ok := people["Vince"]; !ok { panic "Vince is dead!" } Saturday, October 20, 12

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if vince.IsOutOfTheToilet() { // kill the bastard! } else { // stay cool... } // WROOOONG! if mia.IsOverdosed() vince.ApplyAdrenalineTo(mia) if vince, ok := people["Vince"]; !ok { panic "Vince is dead!" } Saturday, October 20, 12

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if vince.IsOutOfTheToilet() { // kill the bastard! } else { // stay cool... } // WROOOONG! if mia.IsOverdosed() vince.ApplyAdrenalineTo(mia) if vince, ok := people["Vince"]; !ok { panic "Vince is dead!" } Saturday, October 20, 12

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SLICES Saturday, October 20, 12

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var people []Person people := make([]Person, 5) dumbNumbers := []int{1,2,3,4} len(dumbNumbers) // => 4 cap(people) // => 5 motherfuckers := people[1:3] dumbNumbers := append(dumbNumbers, 5) Saturday, October 20, 12

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var people []Person people := make([]Person, 5) dumbNumbers := []int{1,2,3,4} len(dumbNumbers) // => 4 cap(people) // => 5 motherfuckers := people[1:3] dumbNumbers := append(dumbNumbers, 5) Saturday, October 20, 12

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var people []Person people := make([]Person, 5) dumbNumbers := []int{1,2,3,4} len(dumbNumbers) // => 4 cap(people) // => 5 motherfuckers := people[1:3] dumbNumbers := append(dumbNumbers, 5) Saturday, October 20, 12

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var people []Person people := make([]Person, 5) dumbNumbers := []int{1,2,3,4} len(dumbNumbers) // => 4 cap(people) // => 5 motherfuckers := people[1:3] dumbNumbers := append(dumbNumbers, 5) Saturday, October 20, 12

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var people []Person people := make([]Person, 5) dumbNumbers := []int{1,2,3,4} len(dumbNumbers) // => 4 cap(people) // => 5 motherfuckers := people[1:3] dumbNumbers := append(dumbNumbers, 5) Saturday, October 20, 12

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var people []Person people := make([]Person, 5) dumbNumbers := []int{1,2,3,4} len(dumbNumbers) // => 4 cap(people) // => 5 motherfuckers := people[1:3] dumbNumbers := append(dumbNumbers, 5) Saturday, October 20, 12

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var people []Person people := make([]Person, 5) dumbNumbers := []int{1,2,3,4} len(dumbNumbers) // => 4 cap(people) // => 5 motherfuckers := people[1:3] dumbNumbers := append(dumbNumbers, 5) Saturday, October 20, 12

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MAPS Saturday, October 20, 12

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var people map[string]Person people = make(map[string]Person) people := make(map[string]Person) people := map[string]Person{} jules := people["Jules"] delete(people, "Vince") Saturday, October 20, 12

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var people map[string]Person people = make(map[string]Person) people := make(map[string]Person) people := map[string]Person{} jules := people["Jules"] delete(people, "Vince") Saturday, October 20, 12

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var people map[string]Person people = make(map[string]Person) people := make(map[string]Person) people := map[string]Person{} jules := people["Jules"] delete(people, "Vince") Saturday, October 20, 12

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var people map[string]Person people = make(map[string]Person) people := make(map[string]Person) people := map[string]Person{} jules := people["Jules"] delete(people, "Vince") Saturday, October 20, 12

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var people map[string]Person people = make(map[string]Person) people := make(map[string]Person) people := map[string]Person{} jules := people["Jules"] delete(people, "Vince") Saturday, October 20, 12

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var people map[string]Person people = make(map[string]Person) people := make(map[string]Person) people := map[string]Person{} jules := people["Jules"] delete(people, "Vince") Saturday, October 20, 12

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LOOPS Saturday, October 20, 12

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for i := 0; i < 100; i++ { fmt.Println(i) } i := 0; for i < 1000 { fmt.Println(i) i++ } for name, motherfucker := range motherfuckers { motherfucker.Kill() fmt.Printf("%s is fucking dead\n", name") } Saturday, October 20, 12

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for i := 0; i < 100; i++ { fmt.Println(i) } i := 0; for i < 1000 { fmt.Println(i) i++ } for name, motherfucker := range motherfuckers { motherfucker.Kill() fmt.Printf("%s is fucking dead\n", name") } Saturday, October 20, 12

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for i := 0; i < 100; i++ { fmt.Println(i) } i := 0; for i < 1000 { fmt.Println(i) i++ } for name, motherfucker := range motherfuckers { motherfucker.Kill() fmt.Printf("%s is fucking dead\n", name") } Saturday, October 20, 12

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STRUCTURES Saturday, October 20, 12

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type Vince struct { Stoned bool } type Stoner struct { Stoned bool } type Vince struct { Stoner } var vince Vince var vince = Vince{true} var vince = &Vince{true} func NewVince() *Vince { return &Vince{stoned: true} } Saturday, October 20, 12

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type Vince struct { Stoned bool } type Stoner struct { Stoned bool } type Vince struct { Stoner } var vince Vince var vince = Vince{true} var vince = &Vince{true} func NewVince() *Vince { return &Vince{stoned: true} } Saturday, October 20, 12

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type Vince struct { Stoned bool } type Stoner struct { Stoned bool } type Vince struct { Stoner } var vince Vince var vince = Vince{true} var vince = &Vince{true} func NewVince() *Vince { return &Vince{stoned: true} } Saturday, October 20, 12

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type Vince struct { Stoned bool } type Stoner struct { Stoned bool } type Vince struct { Stoner } var vince Vince var vince = Vince{true} var vince = &Vince{true} func NewVince() *Vince { return &Vince{stoned: true} } Saturday, October 20, 12

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type Vince struct { Stoned bool } type Stoner struct { Stoned bool } type Vince struct { Stoner } var vince Vince var vince = Vince{true} var vince = &Vince{true} func NewVince() *Vince { return &Vince{stoned: true} } Saturday, October 20, 12

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type Vince struct { Stoned bool } type Stoner struct { Stoned bool } type Vince struct { Stoner } var vince Vince var vince = Vince{true} var vince = &Vince{true} func NewVince() *Vince { return &Vince{stoned: true} } Saturday, October 20, 12

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type Vince struct { Stoned bool } type Stoner struct { Stoned bool } type Vince struct { Stoner } var vince Vince var vince = Vince{true} var vince = &Vince{true} func NewVince() *Vince { return &Vince{stoned: true} } Saturday, October 20, 12

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METHODS Saturday, October 20, 12

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type Vince struct { isStoned bool } func (vince *Vince) IsStoned() bool { return vince.isStoned } func (vince *Vince) SmokePot() bool { vince.isStoned = true } type FuckingInt int func (x FuckingInt) Square() int { return int(x) * int(x) } Saturday, October 20, 12

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type Vince struct { isStoned bool } func (vince *Vince) IsStoned() bool { return vince.isStoned } func (vince *Vince) SmokePot() bool { vince.isStoned = true } type FuckingInt int func (x FuckingInt) Square() int { return int(x) * int(x) } Saturday, October 20, 12

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INTERFACES Saturday, October 20, 12

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type Jules struct {} func (jules *Jules) IsStoned() bool { return false } type Vince struct {} func (vince *Vince) IsStoned() bool { return true } type Stoner interface { IsStoned() bool } func PrintStoner(s Stoner) { fmt.Printf("%x", s) } var x interface{} Saturday, October 20, 12

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type Jules struct {} func (jules *Jules) IsStoned() bool { return false } type Vince struct {} func (vince *Vince) IsStoned() bool { return true } type Stoner interface { IsStoned() bool } func PrintStoner(s Stoner) { fmt.Printf("%x", s) } var x interface{} Saturday, October 20, 12

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type Jules struct {} func (jules *Jules) IsStoned() bool { return false } type Vince struct {} func (vince *Vince) IsStoned() bool { return true } type Stoner interface { IsStoned() bool } func PrintStoner(s Stoner) { fmt.Printf("%x", s) } var x interface{} Saturday, October 20, 12

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type Jules struct {} func (jules *Jules) IsStoned() bool { return false } type Vince struct {} func (vince *Vince) IsStoned() bool { return true } type Stoner interface { IsStoned() bool } func PrintStoner(s Stoner) { fmt.Printf("%x", s) } var x interface{} Saturday, October 20, 12

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GOROUTINES AND CHANNELS Saturday, October 20, 12

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go func() { for i := 1; i < 100; i++ { fmt.Println(i) } }() go SomeMotherfuckingExpensiveLoop() go AnotherMotherfuckingLoop() // app is keep going here... var killed chan bool killed = make(chan bool) go func() { <-killed }() killed <- true <-time.After(10 * time.Second) Saturday, October 20, 12

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go func() { for i := 1; i < 100; i++ { fmt.Println(i) } }() go SomeMotherfuckingExpensiveLoop() go AnotherMotherfuckingLoop() // app is keep going here... var killed chan bool killed = make(chan bool) go func() { <-killed }() killed <- true <-time.After(10 * time.Second) Saturday, October 20, 12

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go func() { for i := 1; i < 100; i++ { fmt.Println(i) } }() go SomeMotherfuckingExpensiveLoop() go AnotherMotherfuckingLoop() // app is keep going here... var killed chan bool killed = make(chan bool) go func() { <-killed }() killed <- true <-time.After(10 * time.Second) Saturday, October 20, 12

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select { case <-jules.Shoot(): fmt.Println("Jules killed motherfucker") case <-vince.Shoot(): fmt.Println("Vince killed motherfucker") } select { // *snip* default: // do something while waiting for the channels. } Saturday, October 20, 12

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select { case <-jules.Shoot(): fmt.Println("Jules killed motherfucker") case <-vince.Shoot(): fmt.Println("Vince killed motherfucker") } select { // *snip* default: // do something while waiting for the channels. } Saturday, October 20, 12

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GOING DEEPER... Saturday, October 20, 12

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func main() { for i := 0; i < 10; i++ { fmt.Println(i) } } Saturday, October 20, 12

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func main() { go func() { for i := 0; i < 10; i++ { fmt.Println(i) } }() } Saturday, October 20, 12

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func PrintShit() { for i := 0; i < 10; i++ { fmt.Println(i) } } func main() { go PrintShit() <-time.After(2 * time.Second) } Saturday, October 20, 12

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func PrintShit(done chan bool) { for i := 1; i < 10; i++ { fmt.Println(i) } done <- true } func main() { isItThereYet := make(chan bool) go PrintShit(isItThereYet) <-isItThereYet } Saturday, October 20, 12

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func PrintShit() <-chan bool { done := make(chan bool) go func() { for i := 1; i < 10; i++ { fmt.Println(i) } done <- true }() return done } func main() { <-PrintShit() } Saturday, October 20, 12

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SUMARIZING... Saturday, October 20, 12

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Limits of your language are limits of your world... Saturday, October 20, 12

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Limits of your language are limits of your world... Some Smart Motherfucker Saturday, October 20, 12

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Thank you @ ! Saturday, October 20, 12

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Saturday, October 20, 12

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Questions Saturday, October 20, 12

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I DON’T REMEMBER ASKING YOU A GODDAMN THING!! Saturday, October 20, 12

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Links ‘n stuff this talk: - http://bit.ly/RDGxyC rubinius: - http://rubini.us/ Celulloid - http://celluloid.io/ ERLANG: - http://erlang/ GO: - http://golang.org/ GO: TOUR - http://tour.golang.org/ Saturday, October 20, 12

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nu7hatch Poteland @ @ @ @ Saturday, October 20, 12

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WWW.AREYOUFUCKINGCODING.ME WWW.POTELAND.COM Saturday, October 20, 12