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from pymemcache.client.base import Client
from pymemcache.serde import (
CompressedSerde,
pickle_serde,
)
from faker import Faker
import pytest
import random
import string
import time
import zstd # type: ignore
import zlib
fake = Faker(["it_IT", "en_US", "ja_JP"])
def get_random_string(length):
letters = string.ascii_letters
chars = string.punctuation
digits = string.digits
total = letters + chars + digits
result_str = "".join(random.choice(total) for i in range(length))
return result_str
class CustomObject:
"""
Custom class for verifying serialization
"""
def __init__(self):
self.number = random.randint(0, 100)
self.string = fake.text()
self.object = fake.profile()
class CustomObjectValue:
def __init__(self, value):
self.value = value
def benchmark(count, func, *args, **kwargs):
start = time.time()
for _ in range(count):
result = func(*args, **kwargs)
duration = time.time() - start
print(str(duration))
return result
@pytest.fixture(scope="session")
def names():
names = []
for _ in range(15):
names.append(fake.name())
return names
@pytest.fixture(scope="session")
def paragraphs():
paragraphs = []
for _ in range(15):
paragraphs.append(fake.text())
return paragraphs
@pytest.fixture(scope="session")
def objects():
objects = []
for _ in range(15):
objects.append(CustomObject())
return objects
# Always run compression for the benchmarks
min_compress_len = 1
default_serde = CompressedSerde(min_compress_len=min_compress_len)
zlib_serde = CompressedSerde(
compress=lambda value: zlib.compress(value, 9),
decompress=lambda value: zlib.decompress(value),
min_compress_len=min_compress_len,
)
zstd_serde = CompressedSerde(
compress=lambda value: zstd.compress(value),
decompress=lambda value: zstd.decompress(value),
min_compress_len=min_compress_len,
)
serializers = [
None,
default_serde,
zlib_serde,
zstd_serde,
]
ids = ["none", "zlib ", "zlib9", "zstd "]
@pytest.mark.benchmark()
@pytest.mark.parametrize("serde", serializers, ids=ids)
def test_bench_compress_set_strings(count, host, port, serde, names):
client = Client((host, port), serde=serde, encoding="utf-8")
def test():
for index, name in enumerate(names):
key = f"name_{index}"
client.set(key, name)
benchmark(count, test)
@pytest.mark.benchmark()
@pytest.mark.parametrize("serde", serializers, ids=ids)
def test_bench_compress_get_strings(count, host, port, serde, names):
client = Client((host, port), serde=serde, encoding="utf-8")
for index, name in enumerate(names):
key = f"name_{index}"
client.set(key, name)
def test():
for index, _ in enumerate(names):
key = f"name_{index}"
client.get(key)
benchmark(count, test)
@pytest.mark.benchmark()
@pytest.mark.parametrize("serde", serializers, ids=ids)
def test_bench_compress_set_large_strings(count, host, port, serde, paragraphs):
client = Client((host, port), serde=serde, encoding="utf-8")
def test():
for index, p in enumerate(paragraphs):
key = f"paragraph_{index}"
client.set(key, p)
benchmark(count, test)
@pytest.mark.benchmark()
@pytest.mark.parametrize("serde", serializers, ids=ids)
def test_bench_compress_get_large_strings(count, host, port, serde, paragraphs):
client = Client((host, port), serde=serde, encoding="utf-8")
for index, p in enumerate(paragraphs):
key = f"paragraphs_{index}"
client.set(key, p)
def test():
for index, _ in enumerate(paragraphs):
key = f"paragraphs_{index}"
client.get(key)
benchmark(count, test)
@pytest.mark.benchmark()
@pytest.mark.parametrize("serde", serializers, ids=ids)
def test_bench_compress_set_objects(count, host, port, serde, objects):
client = Client((host, port), serde=serde, encoding="utf-8")
def test():
for index, o in enumerate(objects):
key = f"objects_{index}"
client.set(key, o)
benchmark(count, test)
@pytest.mark.benchmark()
@pytest.mark.parametrize("serde", serializers, ids=ids)
def test_bench_compress_get_objects(count, host, port, serde, objects):
client = Client((host, port), serde=serde, encoding="utf-8")
for index, o in enumerate(objects):
key = f"objects_{index}"
client.set(key, o)
def test():
for index, _ in enumerate(objects):
key = f"objects_{index}"
client.get(key)
benchmark(count, test)
@pytest.mark.benchmark()
def test_optimal_compression_length():
for length in range(5, 2000):
input_data = get_random_string(length)
start = len(input_data)
for index, serializer in enumerate(serializers[1:]):
name = ids[index + 1]
value, _ = serializer.serialize("foo", input_data)
end = len(value)
print(f"serializer={name}\t start={start}\t end={end}")
@pytest.mark.benchmark()
def test_optimal_compression_length_objects():
for length in range(5, 2000):
input_data = get_random_string(length)
obj = CustomObjectValue(input_data)
start = len(pickle_serde.serialize("foo", obj)[0])
for index, serializer in enumerate(serializers[1:]):
name = ids[index + 1]
value, _ = serializer.serialize("foo", obj)
end = len(value)
print(f"serializer={name}\t start={start}\t end={end}")
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