MySQL blob type

In MySQL, blob is a binary large object and a container that can store a large amount of data. It can hold data of different sizes. The Blob type is actually a type series (tinyblob, blob, mediumblob, and longblob). They are equivalent except for the maximum amount of information stored.

Four blob types in MySQL

Type	Size (unit: bytes)
Tinyblob	255 Max
Blob	Maximum 65 K
Mediumblob	Maximum 16 m
Longblob	Maximum 4 GB

In actual use, different blob types are defined based on the data size to be stored.
Note: If the file you store is too large, the database performance will decrease a lot.