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"""Benchmarking Key-Value Stores
$ python -m IPython tests/benchmark_kv_store.py
"""
from IPython import get_ipython
import diskcache
ipython = get_ipython()
assert ipython is not None, 'No IPython! Run with $ ipython ...'
value = 'value'
print('diskcache set')
dc = diskcache.FanoutCache('/tmp/diskcache')
ipython.magic("timeit -n 100 -r 7 dc['key'] = value")
print('diskcache get')
ipython.magic("timeit -n 100 -r 7 dc['key']")
print('diskcache set/delete')
ipython.magic("timeit -n 100 -r 7 dc['key'] = value; del dc['key']")
try:
import dbm.gnu # Only trust GNU DBM
except ImportError:
print('Error: Cannot import dbm.gnu')
print('Error: Skipping import shelve')
else:
print('dbm set')
d = dbm.gnu.open('/tmp/dbm', 'c')
ipython.magic("timeit -n 100 -r 7 d['key'] = value; d.sync()")
print('dbm get')
ipython.magic("timeit -n 100 -r 7 d['key']")
print('dbm set/delete')
ipython.magic(
"timeit -n 100 -r 7 d['key'] = value; d.sync(); del d['key']; d.sync()"
)
import shelve
print('shelve set')
s = shelve.open('/tmp/shelve')
ipython.magic("timeit -n 100 -r 7 s['key'] = value; s.sync()")
print('shelve get')
ipython.magic("timeit -n 100 -r 7 s['key']")
print('shelve set/delete')
ipython.magic(
"timeit -n 100 -r 7 s['key'] = value; s.sync(); del s['key']; s.sync()"
)
try:
import sqlitedict
except ImportError:
print('Error: Cannot import sqlitedict')
else:
print('sqlitedict set')
sd = sqlitedict.SqliteDict('/tmp/sqlitedict', autocommit=True)
ipython.magic("timeit -n 100 -r 7 sd['key'] = value")
print('sqlitedict get')
ipython.magic("timeit -n 100 -r 7 sd['key']")
print('sqlitedict set/delete')
ipython.magic("timeit -n 100 -r 7 sd['key'] = value; del sd['key']")
try:
import pickledb
except ImportError:
print('Error: Cannot import pickledb')
else:
print('pickledb set')
p = pickledb.load('/tmp/pickledb', True)
ipython.magic("timeit -n 100 -r 7 p['key'] = value")
print('pickledb get')
ipython.magic(
"timeit -n 100 -r 7 p = pickledb.load('/tmp/pickledb', True); p['key']"
)
print('pickledb set/delete')
ipython.magic("timeit -n 100 -r 7 p['key'] = value; del p['key']")
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