yoton 0.1.0

Cache decorator to make applying cache less pain

YoTon is an util for cache, it simplifies cache with a decorator.

Install

$ pip install yoton

Configuration

redis_server_config = {
    "default": {
        "host": "localhost",
        "port": 6379,
        "db": 1
    },
    "server_a": {
        "host": "localhost",
        "port": 6378,
        "db": 2,
    }
}
yoton = YoTon(redis_server_config)

Apply To Function

@yoton.cache(key_pattern="dummy_cache_key", expire_seconds=60)
def dummy_func():
    return "hello"

>> dummy_func()  # call the function
"hello" set in the cache

Key Pattern

The cache key is using python’s string format syntax, you can find it here

@youton.cache(key_pattern="dummy:{a}_{b}_{c}", expire_seconds=60)
def dummy_func_with_params(a, b, c=3):
    return a + b + c

Complex object in parameters

@youton.cache(key_pattern="dummy:{a.id}_{b.name}", expire_seconds=60)
def dummy_func_with_params(a, b):
    return a + b

Select Database

@yoton.cache(key_pattern="dummy_cache_key", database="test", expire_seconds=60)
def dummy_func_database():
    return "hello"

Customized Formatter

@yoton.cache(key_pattern="dummy_cache_key", key_formatter=CustomizedFormatter(), expire_seconds=60)
def dummy_func_keyforamtter():
    pass

Apply Cache To Instance Method

class DummyClass(object):

    @yoton.cache(key_pattern="instance_method")
    def instance_method(self):
        return "hello"

Misc

# call the function directly without touch cache
dummy_func_with_params.call(a=1, b=2, c=3)

# refresh cache data
dummy_func_with_params.refresh_cache(a=1, b=2, c=3)

# remove data in cache
dummy_func_with_params.delete_cache(a=1, b=2, c=3)