How do I store images correctly in Redis?

user_5184005 0
Viewed 8690

Decided to store images in Redis, how to do it correctly? Now I do this:

$redis->set('image_path', 'here is the base64 image code');

I'm not sure this is normal.

redis php
2 Answers

It is perfectly ok to store images in Redis. Redis keys and values are both binary-safe

Redis Strings are binary safe, this means that a Redis string can contain any kind of data, for instance a JPEG image or a serialized Ruby object.

A String value can be at max 512 Megabytes in length.

See Data types

You can store the image in binary instead of base64 and it will be more efficient:

  • In RAM memory usage on your redis server
  • In Network usage
  • In compute (CPU) usage assuming you are passing the images in binary to the final client

You can do

$client->set('profile_picture', file_get_contents("profile.png"));

See Storing Binary Data in Redis

user_70174660

Here is my simple example of storing image file into Redis Database and retrieve them as well

from PIL import Image
import redis
from io import BytesIO


output = BytesIO()
im = Image.open("/home/user/im.jpg")
im.save(output, format=im.format)

r = redis.StrictRedis(host='localhost', port= 6379, db =0)
r.set('imgdata', output.getvalue())
output.close()
r.save  #redis-cli --raw get 'imgdata' >test.jpg
user_165517500
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