microstate 0.0.7

Experimental standalone state storage service for crawlers at www.microprediction.org

microstate

Simple REST state storage tied to a write key

Creating a state writer

from microstate import MicroStateWriter
from microprediction import new_key
write_key = new_key(difficulty=11) # Takes a while! 
msw = MicroStateWriter(write_key=write_key)

Usage pattern 1

Assume we have data taking the form of a dictionary

data = {'age':17,'model':'my model','params':{'mean':17,'std':10}

Store data:

msw.set(value=data)

Retrieve data:

data = msw.get()     

Usage pattern 2 (using a logical memory location from 0 to 99)

Store data with a location index

msw.set(value=data, k=34)

Retrieve data with a location index

data = msw.get(k=34) 

Other data types

In addition to dict, or list, data may be str, int or float. However it will be stored internally as a binary string. Be aware of this when retrieving the data.

Partial support for tuple

Tuples can be stored but will be converted to list.

Memory limits

Assuming a write key of difficulty at least 11:

location  0      holds    320 kb
locations 1-319  hold       1 kb each