Understanding Memory Usage of Numbers and Strings in MongoDB
TIL: Understanding Memory Usage of Numbers and Strings in MongoDB In MongoDB, the memory size of data types like Number and String varies depending on the specific type and content. Here’s a simplified breakdown: Number Data Types: Double (64-bit floating-point): 8 bytes. 32-bit Integer (int): 4 bytes. 64-bit Integer (long): 8 bytes. Decimal128 (high-precision): 16 bytes. String Data Type: Memory Size: Depends on the length of the string in UTF-8 encoding. Formula: (Number of UTF-8 characters) + 1 byte for a null terminator + 4 bytes for overhead. For example, the string “hello” would require 10 bytes in total. ...