JavaScript concurrency : build better software with concurrent JavaScript programming, and unlock a more efficient and forward-thinking approach to web development /: build better software with concurrent JavaScript programming, and unlock a more efficient and forward-thinking approach to web development. (2015)

• Record Type: Book
• Further Information: Note: Adam Boduch.
• Authors: Boduch, Adam
• Contents: Cover; Copyright; Credits; About the Author; About the Reviewer; www.PacktPub.com; Table of Contents; Preface; Chapter 1: Why JavaScript Concurrency?; Synchronous JavaScript; Synchronicity is easy to understand; Asynchronous is inevitable; Asynchronous browsers; Types of concurrency; Asynchronous actions; Parallel actions; JavaScript concurrency principles: Parallelize, Synchronize, Conserve; Parallelize; Synchronize; The Promise API; Conserve; Summary; Chapter 2: The JavaScript Execution Model; Everything is a task; Meet the players; The Execution environment; Event loops; Task queues Execution contextsMaintaining execution state; Job queues; Creating tasks using timers; Using setTimeout(); Using setInterval(); Responding to DOM events; Event targets; Managing event frequency; Responding to network events; Making requests; Coordinating requests; Concurrency challenges with this model; Limited opportunity for parallelism; Synchronization through callbacks; Summary; Chapter 3: Synchronizing with Promises; Promise terminology; Promise; State; Executor; Resolver; Rejector; Thenable; Resolving and rejecting promises; Resolving promises; Rejecting promises; Empty promises Reacting to promisesResolution job queues; Using promised data; Error callbacks; Always reacting; Resolving other promises; Promise-like objects; Building callback chains; Promises only change state once; Immutable promises; Many then callbacks, many promises; Passing promises around; Synchronizing several promises; Waiting on promises; Cancelling promises; Promises without executors; Summary; Chapter 4: Lazy Evaluation with Generators; Call stacks and memory allocation; Bookmarking function contexts; Sequences instead of arrays; Creating generators and yielding values Generator function syntaxYielding values; Iterating over generators; Infinite sequences; No end in sight; Alternating sequences; Deferring to other generators; Selecting a strategy; Interweaving generators; Passing data to generators; Reusing generators; Lightweight map/reduce; Coroutines; Creating coroutine functions; Handling DOM events; Handling promised values; Summary; Chapter 5: Working with Workers; What are workers?; OS threads; Event targets; True parallelism; Types of workers; Dedicated workers; Sub-workers; Shared workers; Worker environments; What's available, what isn't? Loading scriptsCommunicating with workers; Posting messages; Message serialization; Receiving messages from workers; Sharing application state; Sharing memory; Fetching resources; Communicating between pages; Performing sub-tasks with sub-workers; Dividing work into tasks; A word of caution; Error handling in web workers; Error condition checking; Exception handling; Summary; Chapter 6: Practical Parallelism; Functional programming; Data in, data out; Immutability; Referential transparency and time; Do we need to go parallel?; How big is the data?; Hardware concurrency capabilities
• Publisher Details: Birmingham : Packt Publishing
• Publication Date: 2015
• Extent: 1 online resource, illustrations
• Subjects: 005.2762; COMPUTERS -- Web -- Design; JavaScript (Computer program language); Application software -- Development; COMPUTERS / Programming Languages / JavaScript; Application software -- Development; JavaScript (Computer program language); COMPUTERS -- Programming Languages -- General; Electronic books; Electronic books
• Languages: English
• ISBNs: 9781785880261; 1785880268; 1785889230; 9781785889233
• Related ISBNs: 9781785889233
• Notes: Note: Online resource; title from PDF title page (EBSCO, viewed May 3, 2016)
• Access Rights: Legal Deposit; Only available on premises controlled by the deposit library and to one user at any one time; The Legal Deposit Libraries (Non-Print Works) Regulations (UK).
• Access Usage: Restricted: Printing from this resource is governed by The Legal Deposit Libraries (Non-Print Works) Regulations (UK) and UK copyright law currently in force.