nginx-image-resizer

Docker Container of real time image resizing and caching

Build Image

$ docker build -t nginx-image-resizer .

RUN Image

$ docker run --restart always \
  -p 8002:80 \
  -e NGINX_HOST=localhost \
  -e IMAGE_HOST="http://localhost:9000" \
  nginx-image-resizer

Paramemter

Parameter	required	default value
NGINX_HOST	true
IMAGE_HOST	true
JPG_QUALITY	false	95
EXPIRE_TIME	false	7d
MEMORY_SIZE	false	20m
CACHE_NAME	false	cache_zone
CACHE_SIZE	false	40m
INACTIVE_TIME	false	30d

example

Start minio and nginx-image-resizer using docker-compose.yml

$ docker-compose up -d

Default access key and secret key as following. create new bucket and uploade test image.

MINIO_ACCESS_KEY: YOUR_MINIO_ACCESS_KEY
MINIO_SECRET_KEY: YOUR_MINIO_SECRET_KEY

set bucket as public permission.

$ mc config host add minio http://localhost:9000 MINIO_ACCESS_KEY MINIO_SECRET_KEY
$ mc policy --recursive public minio/test

open browser as following

# format 1: http://localhost:8002/resize_image_width/bucket_name/image_name
http://localhost:8002/300/test/test.png
# format 2: http://localhost:8002/${image_width}x${image_height}/bucket_name/image_name
http://localhost:8002/300x200/test/test.png

Benchmark

without nginx proxy cache:

$ echo "GET http://localhost:8002/310/test/26946324088_5b3f0b1464_o.png" | vegeta attack -rate=100 -connections=1 -duration=1s | tee results.bin | vegeta report
Requests      [total, rate]            100, 101.01
Duration      [total, attack, wait]    8.258454731s, 989.999ms, 7.268455731s
Latencies     [mean, 50, 95, 99, max]  3.937031678s, 4.079690985s, 6.958110121s, 7.205018428s, 7.268455731s
Bytes In      [total, mean]            4455500, 44555.00
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  100.00%
Status Codes  [code:count]             200:100
Error Set:

with nginx proxy cache:

$ echo "GET http://localhost:8002/310/test/26946324088_5b3f0b1464_o.png" | vegeta attack -rate=100 -connections=1 -duration=1s | tee results.bin | vegeta report
Requests      [total, rate]            100, 101.01
Duration      [total, attack, wait]    993.312255ms, 989.998ms, 3.314255ms
Latencies     [mean, 50, 95, 99, max]  3.717219ms, 3.05486ms, 8.891027ms, 12.488937ms, 12.520428ms
Bytes In      [total, mean]            4455500, 44555.00
Bytes Out     [total, mean]            0, 0.00
Success       [ratio]                  100.00%
Status Codes  [code:count]             200:100
Error Set:

Reference

• Nginx: Real time image resizing and caching
• NGINX reverse proxy image resizing + AWS S3
• Nginx dynamic image resizing with caching
• High‑Performance Caching with NGINX and NGINX Plus
• NGINX and NGINX Plus Deliver Responsive Images Without the Headaches