Virtual Threads

Use cases

"If your application frequently performs heavy computation for very long durations, then virtual threads may be a bad fit to begin with because your system may easily become overcommitted by orders of magnitude."
"If you're using SQLite or RocksDB, think carefully before adopting virtual threads."
"We have had a quick glimpse at using virtual threads with Groovy and Gpars"

Solutions

Helidon is the first Java microservices framework based on virtual threads.

Comparisons

vs Deno/Web Workers

"Performance Management and Scalability:

Java Virtual Threads: They are designed to be lightweight and highly scalable, especially for IO-bound tasks. The JVM manages these threads efficiently, allowing for the creation of thousands to millions of concurrent threads with a much lower memory footprint compared to traditional threads. Deno Web Workers: While powerful for CPU-bound tasks and parallel processing, each worker is a heavier construct compared to a Virtual Thread. This means that while they're excellent for offloading intensive tasks, they might not be as scalable as Virtual Threads for handling many small, concurrent tasks.

Concurrency Model:

Java Virtual Threads: They offer a straightforward model for writing concurrent code, similar to traditional threading but with a much lower overhead. This makes them ideal for applications with a large number of concurrent, mostly idle tasks. Deno Web Workers: They follow a message-passing model which can be more robust in terms of avoiding shared state problems, but it might require a different way of thinking about problem-solving, particularly for those used to shared-state concurrency models."
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Resources

Backlinks

vs Deno/Web Workers