Preface

“Hey, Peter. I think we should throw together a second edition. What do you think?”

“Are you serious? You know how much work we put into the first edition, it nearly killed us both.”

“No, come on. Don’t be thinking major rewrite; be thinking a light-touch iteration just to refresh a few things. It’ll be a snap, done in a couple of months.”

“I’m tired already.”

And so began our journey toward this volume you now hold. It was as far from a light-touch rewrite as any second edition could be. Experts recommend a second edition should have at least 20% new content; I think ours is more like 50%, with a refresh of the rest. So we’re very tired right now!

So much has happened since the first edition. Grails is now owned and backed by an industrial ...

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