InfoQ Homepage Concurrency Content on InfoQ
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Swift 6.2 Introduces Approachable Concurrency to Simplify Concurrent Programming
Announced at its latest developer conference, WWDC25, Swift Approachable Concurrency is a new feature in Swift 6.2 designed to simplify concurrent programming for the most common use cases in mobile apps.
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Jakarta EE 11 Delivers One New Specification, 16 Updated Specifications and Modernized TCK
Although a full GA release of Jakarta EE 11 was originally planned for July 2024, only the Core Profile and the Web Profile were delivered in December 2024 and April 2025, respectively. And now, the Jakarta EE 11 Platform has been delivered featuring one new specification and a new TCK. Ed Burns, release coordinator for Jakarta EE 11, spoke to InfoQ about the release of Jakarta EE 11.
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C++26 Draft Finalized with Static Reflection, Contracts, and Sender/Receiver Types
The next major release of C++ reached an important milestone earlier this month, when the ISO C++ committee froze the feature set that will go into C++26. Notable additions include compile-time reflection, contracts, asynchronous execution, and many others.
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JEP 505 Delivers Fifth Preview of Java's Structured Concurrency with Key API Refinements
JEP 505, Structured Concurrency, has reached Targeted status in JDK 25. This refined API enhances parallel task management through static factory methods like StructuredTaskScope.open(). It improves cancellation, observability, and subtask lifetime handling, ensuring clearer, safer code. Developers are encouraged to explore and provide feedback on this innovative iteration.
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Improving Threads' iOS Performance at Meta
An app's performance is key to make users want to use it, say Meta engineers Dave LaMacchia and Jason Patterson. This includes making it lightning-fast, battery-efficient, and reliable across a range of devices and connectivity conditions. In a recent article, they recounted their experience with the Threads app.
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Java Evolves to Tackle Virtual Threads Pinning with JEP 491
JEP 491, "Synchronize Virtual Threads without Pinning," is now Proposed to Target for JDK 24. This initiative aims to resolve Java's "pinning" issue, a limitation of the synchronized keyword, which restricts scalability with virtual threads. JEP 491 eliminates this constraint, unlocking high-performance concurrency without extensive refactoring.
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Vapor 5 Materializes the Future of Server-Side Development in Swift
Over four years since the launch of its current version, the team behind Swift server-side development framework Vapor is making room for Vapor 5, which aims at leveraging Swift 6 concurrency capabilities and laying the foundations for the framework's future evolution. An initial alpha release is planned to be ready when Swift 6 is officially released.
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JEP 481: Third Preview of Scoped Values API Brings Key Enhancements in JDK 23
JEP 481, Scoped Values (Third Preview), formerly known as Extent-Local Variables (Incubator), offers a third preview, with one change, to gain additional experience and feedback from one round of incubation and two rounds of preview. This feature enables the sharing of immutable data within and across threads.
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Swift 6 Brings New Opt-In Data-Race Safe Mode
In his WWDC 2024 talk, Apple's Languages and Runtimes team lead and Swift core team member Ted Kremenek introduced Swift 6 new data-race safe mode, which promises to help developers create concurrent programs free of data races thanks to a new compile-time static detector.
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High HTTP Scaling with Azure Functions Flex Consumption: Q&A with Thiago Almeida and Paul Batum
Microsoft has introduced a significant enhancement to its Azure Functions platform with the Flex Consumption plan, designed to handle high HTTP scale efficiently. This new plan supports customizable per-instance concurrency, allowing users to achieve high throughput while managing costs effectively. In practical tests, Azure Functions Flex demonstrated the ability to scale from zero to 32,000 RPS.
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JobRunr Introduces Version 7.0 with Built-in Support for Virtual Threads
JobRunr v7 now defaults to virtual threads for applications using JDK 21, optimizing concurrency for I/O-bound tasks and allowing more jobs to run simultaneously. This update maintains compatibility with Java 8 and supports GraalVM native mode. RedisStorageProvider and ElasticSearchStorageProvider are planned to be dropped in future releases. MongoDB driver is also upgraded.
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Swift Asynchronous Programming Recipes on GitHub
Swift developer Matt Massicotte, formerly at Crashlytics and Apple, has recently launched a GitHub repo collecting a number of useful recipes to make it easier to use Swift concurrency and solve recurrent problems, while being aware of the most common traps you can fall into.
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Erlang-Runtime Statically-Typed Functional Language Gleam Reaches 1.0
Gleam, an actor-based highly-concurrent functional language running on the Erlang virtual machine (BEAM), has reached version 1.0, which means it is now ready to be used in production systems with a guarantee of backward compatibility based on semantic versioning.
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Swift 5.10 Brings Full Data Isolation Compile-Time Safety to Concurrent Code
The latest Swift release, Swift 5.10, includes just a few new proposals that nevertheless represent an important achievement for the language concurrency model, which is now able to ensure full data isolation at the compiler level, explains Swift team engineer Holly Borla.
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Apache Pekko: Simplifying Concurrent Development with the Actor Model
Apache Pekko is an open-source framework designed to simplify the development of concurrent, distributed, resilient, and elastic applications. Leveraging the Actor Model, Pekko offers high-level abstractions for concurrency, allowing developers to focus on business logic rather than low-level implementation details.