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

问题描述

我知道数据信息的有效载荷限制最大为4KB。我想知道是否有一个全面的列表，列出了各种Firebase FCM使用限制的细节。
，然后最近我得到了一些与我的应用程序的问题，然后认为这是由于另一个限制 - 每个设备最多4个不同的折叠键。

我也记得在最近的谈话中谷歌提到他们已经删除了一些限制，他们以前喜欢的话题数量等。

我想了解什么所有这些都是Google对FCM使用所施加的各种限制。

这里Firebase支持给出的答案：

无论用户数量和消息推送如何，Firebase Cloud Messaging都是免费的，就像Google Cloud Messaging一样。
但是，下面是它的一些产品限制：
每次发送使用registration_ids参数时，使用1000个注册令牌的限制。所以如果你想发送5000条消息给不同的用户，你需要分5批发送消息。有100个消息的限制，可以存储不折叠。信息中内预读
您也可能遇到限制，例如每秒发送太多的邮件。除此之外，FCM中的所有内容都是免费且无限的。

我们目前没有FCM的SLA，因为它是免费服务。由于我们不控制服务器和设备之间的网络，因此我们无法保证消息的传送。我们也为这项服务的付费和免费计划提供同样水平的支持。请在这里看到我们的定价常见问题，在我将获得什么样的支持？了解更多信息。

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

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".

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..

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

解决方案

Here the answer given by Firebase support:

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.

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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