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swift-nio
Swift2018–2026
apple / swift-nio

swift-nio

Event-driven network application framework for high performance protocol servers & clients, non-blocking.

Systems & InfrastructureNetworkingLibraries & SDKs
Explore on GitHubRead Hacker News discussions
20Distinct people
21Mentions
0Explicit recommenders
8.6KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Event-driven network application framework for high performance protocol servers & clients, non-blocking.

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 5:05:26 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year21 dated mentions

Observed mentions: 2018-03-01 06:53:38 UTC to 2026-06-15 06:21:30 UTC.

02462018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 7 mentions; 1 submissions, 6 comments20182019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC716
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC404
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC303
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC101
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC202
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC101
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC202
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC000
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC101

What Hacker News says

7 sources
jrs95·Jun 11, 2018
Vapor generally kicks ass in benchmarks FWIW, and it's using this now so clearly Apple is beginning to pay attention to stuff around server side concurrency: https://github.com/apple/swift-nio Although as I mentioned in another comment, if you're looking for something more mature, Kotlin is a great option. Vert.x has the widest database support and is lean and fast, so this is probably what you're looking for. But if just Mongo/Cassandra/Redis is acceptable, Spring Boot w/ Reactive Web looks pretty cool, too.
In My misalignment with Apple's love affair with Swift
veidr·Mar 30, 2018
Swift on Linux, which is the key to "server side" swift, is really coming along. However, it still has several rough edges that, while they can be worked around, mar the experience and probably discourage a lot of casual tinkerers who try it. For instance, if you download the Swift 4.1 tarball, uncompress it, and start up the REPL, it doesn't really work. The first thing you will do is probably "import Foundation" (because the Swift standard library is really minimal, so Foundation is where most of the interesting stuff is). Then the REPL will complain: error: repl.swift:1:8: error: missing required module 'CoreFoundation' You'd have to hunt on the Swift bug tracker[1] to figure out that's a packaging problem on Linux, and to fix it you have to do something like: sudo chmod a+r /opt/swift/usr/lib/swift/CoreFoundation/* Then, say
Read the rest
you make a toy program, and try to debug it using lldb. That might seem to work, but as soon as you stop at a breakpoint and try to print a value, booom! lldb will spit a wall of error text at you. (This assumes your program imports Foundation, again, but almost every program will.) This is also work-aroundable, as long as you are able to find the JIRA ticket thread describing how to work around it[2]. There are a bunch of little issues like this, that make it clear that Linux isn't yet a first-class platform for Swift. All this stuff is gonna work fine on your Mac. OTOH though, the Foundation library itself has made amazing, amazing progress. It's super useful, mostly finished[3], and its pretty clear when stuff that works on Apple platforms isn't yet ready on Linux (because those bits use NSUnimplemented() which just crashes the program). That's important because without Foundation, which contains a lot of the basic building blocks for programs, Swift won't be competing with Go or Rust. Swift Package Manager is also fully cross-platform and awesome. Apple also recently released an interesting low-level cross-platform asynchronous event-driven network application framework, called swift-nio[4]. This is super-interesting, but also causes more churn; for instance, once swift-nio was released, the team behind the most popular Swift web application framework, Vapor[5], started frantically rewriting their v3 release to leverage it. So... yeah, I would say "server side Swift" is becoming less niche, but... it's still pretty niche. On Linux, it's far less mature than Go or Rust, and you need to expect to have to bing[6] a bunch of annoying little issues to get things working. [1]: https://bugs.swift.org/browse/SR-2783 [2]: https://bugs.swift.org/browse/SR-7065 [3]: https://github.com/apple/swift-corelibs-foundation/blob/mast... [4]: https://github.com/apple/swift-nio [5]: https://vapor.codes [6]: just joking! haha ;-D
In Swift 4.1 Released

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