Hi Val, I'd highly support an async first API based on CompletionStage <https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletionStage.html> or its subtypes like CompletableFuture. In Ignite 2 we've written a wrapper library around IgniteFuture to provide CompletionStage instead because many of the newer libs we use support this. If Ignite 3 went this way it'd remove a lot of boiler plate/wrapper that we wrote to get what you're suggesting here.
Regards, Courtney Robinson Founder and CEO, Hypi Tel: ++44 208 123 2413 (GMT+0) <https://hypi.io> <https://hypi.io> https://hypi.io On Wed, Sep 8, 2021 at 12:44 AM Valentin Kulichenko < valentin.kuliche...@gmail.com> wrote: > Igniters, > > I would like to gather some opinions on whether we want to focus on sync vs > async APIs in Ignite 3. > > Here are some initial considerations that I have: > 1. Ignite 2.x is essentially "sync first". Async APIs exist, but they use > non-standard IgniteFuture and provide counterintuitive guarantees. In my > experience, they significantly lack usability, and because of that are > rarely used. > 2. In general, however, async execution becomes more and more prominent. > Something we can't ignore if we want to create a modern framework. > 3. Still, async support in Java is very limited (especially if compared to > other languages, like C# for example). > > My current position is the following (happy to discuss): > 1. We should pay more attention to async APIs. As a general rule, async API > should be primary, with the sync version build on top. > 2. In languages with proper async support (async-await, etc.), we can skip > sync API altogether. As an example of this, you can look at the first > version of the .NET client [1]. It exposes only async methods, and it > doesn't look like sync counterparts are really needed. > 3. In Java (as well as other languages where applicable), we will add sync > APIs that simply delegate to async APIs. This will help users to avoid > CompletableFuture if they don't want to use it. > > [1] https://github.com/apache/ignite-3/pull/306 > > Please share your thoughts. > > -Val >
