A simple interface for caching items in DynamoDB
Project description
ddbcache
A simple interface for caching items in DynamoDB
Example Usage
Samples can be found here in the tests
The library can also be used for crud operations since it implement get
, put
, update
, delete
, scan
and query
. Along with create_backup
.
Basic usage is as given below:
def test_put_cache(ddb_cache: DDBCache):
data = randint(1, 100) # noqa: S311
ddb_cache.put_cache({"id": "test_put_cache", "data": data})
item = ddb_cache.get_item({"id": "test_put_cache"})
assert item
assert item["id"] == "test_put_cache"
assert item["data"] == data
assert item["ttl"]
def test_put_cache_no_ttl(ddb_cache: DDBCache):
data = randint(1, 100) # noqa: S311
ddb_cache.put_cache({"id": "test_put_cache", "data": data}, with_ttl=False)
item = ddb_cache.get_item({"id": "test_put_cache"})
assert item
assert item["id"] == "test_put_cache"
assert item["data"] == data
with pytest.raises(KeyError):
item["ttl"]
def test_fetch_cache(ddb_cache: DDBCache, init_cache):
item = ddb_cache.get_item({"id": "test_fetch_cache"})
assert item
assert item["id"] == "test_fetch_cache"
assert item["data"] == "test_fetch_cache"
ttl = item["ttl"]
assert ttl
sleep(1)
item = ddb_cache.fetch_cache({"id": "test_fetch_cache"})
assert item
assert item["id"] == "test_fetch_cache"
assert item["data"] == "test_fetch_cache"
with pytest.raises(KeyError):
item["ttl"]
item = ddb_cache.get_item({"id": "test_fetch_cache"})
assert item
assert item["id"] == "test_fetch_cache"
assert item["data"] == "test_fetch_cache"
ttl2 = item["ttl"]
assert ttl2
assert ttl != ttl2
def test_fetch_cache_no_ttl_update(ddb_cache: DDBCache, init_cache):
item = ddb_cache.get_item({"id": "test_fetch_cache"})
assert item
assert item["id"] == "test_fetch_cache"
assert item["data"] == "test_fetch_cache"
ttl = item["ttl"]
assert ttl
item = ddb_cache.fetch_cache({"id": "test_fetch_cache"}, with_ttl=False)
assert item
assert item["id"] == "test_fetch_cache"
assert item["data"] == "test_fetch_cache"
with pytest.raises(KeyError):
item["ttl"]
item = ddb_cache.get_item({"id": "test_fetch_cache"})
assert item
assert item["id"] == "test_fetch_cache"
assert item["data"] == "test_fetch_cache"
ttl2 = item["ttl"]
assert ttl2
assert ttl == ttl2
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