NEW: Subscribe to Hacking with Swift+ and accelerate your learning! >>

How to use Grand Central Dispatch on your Swift server

See how Dispatch can let you run regularly scheduled work in only a few lines of code.

Paul Hudson       @twostraws

Soroush Khanlou has published a new article giving some helpful tips for using Grand Central Dispatch (GCD) in server-side Swift apps.

After explaining why it’s needed (“The main queue is blocked, constantly spinning, in order to prevent the program from ending”), Soroush goes on to provide examples of dispatch semaphores and timers that are simple enough you can start using them straight away.

While there’s a broader discussion to be had about actors in Swift in the future, spurred by Chris Lattner’s concurrency manifesto, and perhaps in the future, and some of the patterns for asynchronous workers will change, for now, Dispatch is the best tool that we have.

Link: Dispatch On The Server.

Hacking with Swift is sponsored by Instabug

SPONSORED Are you tired of wasting time debugging your Swift app? Instabug’s SDK is here to help you minimize debugging time by providing you with complete device details, network logs, and reproduction steps with every bug report. All data is attached automatically, and it only takes a line of code to setup. Start your free trial now and get 3 months off exclusively for the Hacking with Swift Community.

Start your free trial!

Sponsor Hacking with Swift and reach the world's largest Swift community!

BUY OUR BOOKS
Buy Pro Swift Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift (Vapor Edition) Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Server-Side Swift (Kitura Edition) Buy Beyond Code

About the author

Paul Hudson is the creator of Hacking with Swift, the most comprehensive series of Swift books in the world. He's also the editor of Swift Developer News, the maintainer of the Swift Knowledge Base, and a speaker at Swift events around the world. If you're curious you can learn more here.

Was this page useful? Let us know!

Link copied to your pasteboard.