def sync_actions():
print("Running sync ExpiryPolicy example.")
client = Client()
with client.connect('127.0.0.1', 10800):
print("Create cache with expiry policy.")
try:
ttl_cache = client.create_cache({
PROP_NAME:
'test',
PROP_EXPIRY_POLICY:
ExpiryPolicy(create=timedelta(seconds=1.0))
})
except NotSupportedByClusterError:
print(
"'ExpiryPolicy' API is not supported by cluster. Finishing...")
return
try:
ttl_cache.put(1, 1)
time.sleep(0.5)
print(f"key = {1}, value = {ttl_cache.get(1)}")
# key = 1, value = 1
time.sleep(1.2)
print(f"key = {1}, value = {ttl_cache.get(1)}")
# key = 1, value = None
finally:
ttl_cache.destroy()
print("Create simple Cache and set TTL through `with_expire_policy`")
simple_cache = client.create_cache('test')
try:
ttl_cache = simple_cache.with_expire_policy(access=timedelta(
seconds=1.0))
ttl_cache.put(1, 1)
time.sleep(0.5)
print(f"key = {1}, value = {ttl_cache.get(1)}")
# key = 1, value = 1
time.sleep(1.7)
print(f"key = {1}, value = {ttl_cache.get(1)}")
# key = 1, value = None
finally:
simple_cache.destroy()
student_cache = client.create_cache({
PROP_NAME:
'SQL_PUBLIC_STUDENT',
PROP_SQL_SCHEMA:
'PUBLIC',
PROP_QUERY_ENTITIES: [
{
'table_name':
'Student'.upper(),
'key_field_name':
'SID',
'key_type_name':
'java.lang.Integer',
'field_name_aliases': [],
'query_fields': [
{
'name': 'SID',
'type_name': 'java.lang.Integer',
'is_key_field': True,
'is_notnull_constraint_field': True,
},
{
'name': 'NAME',
'type_name': 'java.lang.String',
},
{
'name': 'LOGIN',
'type_name': 'java.lang.String',
},
{
'name': 'AGE',
'type_name': 'java.lang.Integer',
},
{
'name': 'GPA',
'type_name': 'java.math.Double',
},
],
'query_indexes': [],
'value_type_name':
'SQL_PUBLIC_STUDENT_TYPE',
'value_field_name':
None,
},
],
})
#
# https://www.gridgain.com/products/software/community-edition/gridgain-community-edition-license
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
from pprint import pprint
from pygridgain import Client
client = Client()
with client.connect('127.0.0.1', 10800):
my_cache = client.create_cache('my cache')
my_cache.put_all({'key_{}'.format(v): v for v in range(20)})
# {
# 'key_0': 0,
# 'key_1': 1,
# 'key_2': 2,
# ... 20 elements in total...
# 'key_18': 18,
# 'key_19': 19
# }
with my_cache.scan() as cursor:
for k, v in cursor:
print(k, v)
# 'key_17' 17
# 'key_10' 10