Upgrade to 3.9

[tsegismont]

Moved from eclipse-vertx/vert.x#3513

The guide is available online and new users may be confused because some deprecated methods are used.

[tsegismont]

@jponge what's the process for upgrading? Do you have any idea how long it takes?

[jponge]

First there's the code to upgrade, then the text.

In the long run I am not sure we should keep developing this guide, since some modules in use are deprecated, and there's a book now.

We could maybe fork the wiki example and extract relevant how-tos instead (e.g., authentication, SPA, etc).

[vietj]

let's discuss that on vertx-dev then

…

On Mon, Aug 24, 2020 at 3:06 PM Julien Ponge ***@***.***> wrote: First there's the code to upgrade, then the text. In the long run I am not sure we should keep developing this guide, since some modules in use are deprecated, and there's a book now. We could maybe fork the wiki example and extract relevant how-tos instead (e.g., authentication, SPA, etc). — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#80 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABXDCXUJRNLMAEIT7UAA3TSCJQU3ANCNFSM4PZ2MHGQ> .

[jponge]

agreed

[vietj]

so we should proceed to 3.9 upgrade of versions and label this guide with "guide for Vert.x 3" now