Database.update <String> <int>

[kae90]

Hi, I wanted to avoid using object_t json; JsonWriter writer; writer.create to send a single value to the database and take advantage of this to streamline the sketch.

I noticed that if I send using "set"
Database.set(aClient, USER_UID "/notif", "low");

I can send, but with slightly higher bandwidth consumption than update.

However, if I do directly
Database.update(aClient, USER_UID "/notif", "low");
the data is not received in the database.
I wanted to ask: does database update only support sending with json? Or does it also support etc?
Thanks.

[mobizt]

The Firebase Realtime database REST API requires the JSON representation string as the payload for HTTP PATCH aka update function in this library.

You can directly set JSON representation string to object_t object like this without JsonWritter overhead.

// {"value":12345}}

object_t  json("{\"value\":12345}");

bool status = Database.update(aClient, "/path/to/data", json);

[kae90]

I also wanted to ask you, how do I set the session duration so as not to repeat the handshaking and other parameters with each send? What is the maximum limit? I need to reduce the data sent (if they occur) to 1-2 minutes as much as possible.

[mobizt]

The session is kept alive, but the default timeout was set to 150 seconds.

You can change it longer period (> 150) via AsyncClientClass::setSessionTimeout(sec).

Even you set the client session timeout, Google will terminate it based on its policy which is some period in 2 minutes.

[kae90]

Thanks, then I will try to send data before the 120 seconds to try to keep the connection open and save between sends.