how does Whatsapp save the chats immediately, NOT the backups

Question

My Question is about the way Whatsapp saves the conversation in the time we chat, so , if I close whatsapp, and open it, my last conversations and messages that not yet backed up appear... even if I send a letter (one character), and close the application and the open it, I will find this letter!! Where does whatsapp saves these conversations. and restore them...

We don't talk about the DB backups.

Answer 1

Whats app stores the conversation in the database, that is in the phonememory(Only rooted phones can access that).

Here is the structure of the latest whats app Database:

• messages
• sqlite_sequence
• chat_list
  

However, it takes a backup at 4am everyday and saves it as a db.crypt# file in the sd card. There are ways to access that though, here is one : https://stackoverflow.com/a/23380177/2219600

Answer 2

they maybe using SharedPreferences, and after a certain file size is reached, they might replace the preference.