Earlier this month, we released a first milestone of Reactor 2020.0.
This cycle, codename Europium, follows the Dysprosium one (which included reactor-core 3.3.x and reactor-netty 0.9.x).

It includes reactor-core 3.4.0 and reactor-netty 1.0.0.

In this blog post, we’ll cover a few highlights of the reactor-core milestone, and briefly mention what’s in store for M2.

For reactor-netty, we’ll link to a separate blog post here as soon as it is out.

Note also that there is a new versioning scheme in place, which has been adopted accross the Spring portfolio: see the reference guide and this blog post.

This blog post is the third in a series of posts that aim at providing a deeper look into Reactor’s more advanced concepts and inner workings.

In this post, we explore the threading model, how some (most) operators are concurrent agnostic, the Scheduler abstraction and how to hop from one thread to another mid-sequence with operators like publishOn.

This series is derived from the Flight of the Flux talk, which content I found to be more adapted to a blog post format.

The table below will be updated with links when the other posts are published, but here is the planned content:

This blog post is the second in a series of posts that aim at providing a deeper look into Reactor’s more advanced concepts and inner workings.

It is derived from my Flight of the Flux talk, which content I found to be more adapted to a blog post format.

I’ll update the table below with links when the other posts are published, but here is the planned content:

1. Assembly vs Subscription
2. Debugging caveats (this post)
3. Hopping Threads and Schedulers
4. Inner workings: work stealing
5. Inner workings: operator fusion

This blog post is the first in a series of posts that aim at providing a deeper look into Reactor’s more advanced concepts and inner workings.

It is derived from my Flight of the Flux talk, which content I found to be more adapted to a blog post format.

I’ll update the table below with links when the other posts are published, but here is the planned content:

1. Assembly vs Subscription (this post)
2. Debugging caveats
3. Hopping Threads and Schedulers
4. Inner workings: work stealing
5. Inner workings: operator fusion

On behalf of the Reactor team, I have the pleasure of announcing the newest Reactor milestone, Californium-M1 🚢 🚂

The team has been busy working on Californium, the third major installment of Reactor 3. We are now ready for your feedback on a few select issues, and we have a lot of enhancements and bug fixes ready for your consumption as well.

Californium-M1 BOM

For its third release train, we continue on the theme of alphabetically increasing names on the periodic table of elements. Californium is an element first synthesized in California.

On behalf of the Reactor team, I have the pleasure of announcing a first shipment of Reactor goodness this week: Reactor Bismuth-SR10 is out 🚢

Stay tuned for a Reactor Californium milestone later this week 🕵🏻‍♂️

Reactor Bismuth-SR10

The latest maintenance BOM of the 3.1.x line, Bismuth-SR10, is out. It includes two new artifacts (click on the version numbers to see the release notes on GitHub):

• reactor-core 3.1.8.RELEASE
• reactor-netty 0.7.8.RELEASE

One update considerations though: Flux.last() used to skip throwing a NoSuchElementException on some category of empty sources (Flux or Mono that are Callable, like Flux.empty()). This is a bug and it correctly does throw now.

Reactor-Core 3.1.5

The idea

On behalf of the Reactor team, it is my pleasure to announce that reactor-core 3.1.0.RC1 has been released 🎉. This is a big last step towards GA release of 3.1 at the end of the month, the long term support version that will back Spring 5!

It is also complemented by various releases, all tied together in the Bismuth-M4 Release Train and BOM:

• reactor-test, reactor-extra, reactor-adapter and reactor-logback all made the cut to 3.1.0.RC1
• reactor-netty has seen significant updates and bug fixes in the new 0.7.0.M2 milestone
• reactor-kafka has been released in its 1.0.0.M4 milestone