def handle_bottle_info(id):
"""
The request is in form of flask.request
Try to get data from cache first, if not available there search the DB.
"""
try:
bottle = dumps(redis_get(id))
logging.debug("item: {} was taken from the cache".format(bottle))
except TypeError: # cPickle will error out if it tries to decode None
with execute_session() as session:
bottle = dumps(sqla_obj_to_dict(Cellar.get_row_by_id(id, session)))
logging.debug("item: {} was taken from the db".format(bottle))
_update_total_views(id)
return bottle
def build_cache():
"""
Rows should be an iterator of SQLA rows
"""
def is_close_to_eom():
# End of memory
return redis.info()["used_memory"] + CACHE_BYTE_MARGIN >= MAX_CACHE_SPACE
# Clear the cache first
redis.flushdb()
rows = get_rows_by_total_views(ARBITRARY_LIMIT)
while not is_close_to_eom():
try:
to_add = sqla_obj_to_dict(rows.next())
except StopIteration:
break
else:
logging.debug("Add {} to the cache".format(to_add))
redis_set(to_add["id"], to_add)
logging.info("Finished adding rows to the cache")
