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The Firebase Blog: Better Arrays in Cloud Firestore!

https://firebase.googleblog.com/2018/08/better-arrays-in-cloud-firestore.html

“Arrays haven't always been the best data structure for multi-user environments like Cloud Firestore. As Kato describes in the "Arrays are evil" section of his blog post, bad things can happen if you have multiple clients all trying to update or delete array elements at specific indexes. In the past, Cloud Firestore...” (the page’s own description)

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Last read: 8 Jul 2025
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