firebase realtime database rest api code example
Example: firebase realtime database correct architecture
With this nested design, iterating through the data becomes problematic. For example, listing the titles of chat conversations requires the entire chats tree, including all members and messages, to be downloaded to the client.
Flatten data structures
If the data is instead split into separate paths, also called denormalization, it can be efficiently downloaded in separate calls, as it is needed. Consider this flattened structure:
{
"chats": {
"one": {
"title": "Historical Tech Pioneers",
"lastMessage": "ghopper: Relay malfunction found. Cause: moth.",
"timestamp": 1459361875666
},
"two": { ... },
"three": { ... }
},
"members": {
"one": {
"ghopper": true,
"alovelace": true,
"eclarke": true
},
"two": { ... },
"three": { ... }
},
"messages": {
"one": {
"m1": {
"name": "eclarke",
"message": "The relay seems to be malfunctioning.",
"timestamp": 1459361875337
},
"m2": { ... },
"m3": { ... }
},
"two": { ... },
"three": { ... }
}
}