Firebase FCM 使用限制 [英] Firebase FCM Usage Limits

问题描述

我想知道是否有一个完整的列表来提供各种 Firebase FCM 使用限制的详细信息.

I was wondering if there is a comprehensive list that privides details of the various Firebase FCM usage limits.

我知道最大 4KB 的数据消息负载限制.然后最近我的应用出现了一些问题，然后我认为这是由于另一个限制 - 每台设备最多 4 个不同的折叠键".

I knew of the Data message payload limit of 4KB maximum. and then recently I got some issue with my app and then figured it was due to another limit - "maximum of 4 different collapse keys per device".

我还记得在最近的一次谈话中，谷歌提到他们已经取消了他们以前喜欢的主题数量等的某些限制.

I also remember in one of the recent talks Google mentioned they have removed certain limits that they had previously like number of topics etc..

我正在尝试详细了解 Google 对 FCM 使用实施的所有各种限制.

I am trying to get details of what are all the various limits that Google enforces on the FCM usage.

推荐答案

Firebase 支持人员给出的答案:

Here the answer given by Firebase support:

Firebase Cloud Messaging 是免费的，无论用户数量和消息推送多少，就像 Google Cloud Messaging 一样.但是，这里有一些它的产品限制":每次发送使用 registration_ids 参数时，使用的注册令牌限制为 1000 个.因此，如果您想向不同的用户发送 5000 条消息，则需要分 5 批发送消息.最多可以存储 100 条消息而不会折叠.您可以在此处阅读更多详细信息.您还可能会遇到限制，例如每秒发送过多的消息.除此之外，FCM 中的所有内容都是免费且无限制的.

Firebase Cloud Messaging is free of charge, no matter the number of users and message pushes, just like Google Cloud Messaging was. However, here are some of its product "limitation": There's a limit of 1000 registration tokens used when using registration_ids parameter per send. So if you want to send 5000 messages to different users, you'll need to send the message in 5 batches. There's a limit of 100 messages that can be stored without collapsing. You can read more details here. You may also encounter limitations such as sending too much messages per second. Aside from that, everything in FCM is free and unlimited.

我们目前没有 FCM 的 SLA，因为它是一项免费服务.由于我们无法控制服务器和设备之间的网络，因此我们永远无法保证消息的传递.我们还为此服务的付费和免费计划提供相同级别的支持.请在此处查看我将获得什么样的支持?"下的定价常见问题解答.了解更多信息.

We currently don't have an SLA for FCM since it's a free service. We could never guarantee the delivery of messages since we do not control the networks between our servers and the device. We also offer the same level of support for both our paid and free plans for this service. Kindly see our Pricing FAQ here, under "What kind of support will I receive?" for more information.

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