Latest stories from ShopperCove

dataclass vs slots vs dict: Python Object Lab

Hands-on Python dataclass vs slots vs dict lab: instantiation and attribute ops/s plus RSS for classic, slots, dataclass, namedtuple, dict on localhost.

1 Oct 20266 min read

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Latest stories from ShopperCove

dataclass vs slots vs dict: Python Object Lab

Hands-on Python dataclass vs slots vs dict lab: instantiation and attribute ops/s plus RSS for classic, slots, dataclass, namedtuple, dict on localhost.

1 Oct 20266 min read

→

getaddrinfo DNS Resolve Cost Localhost Lab

Hands-on getaddrinfo cost lab: localhost vs numeric IP vs AI_NUMERICHOST, plus hosts/stub names with real p50/p95 µs. DNS sinkhole labeled honestly here.

1 Oct 20266 min read

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Atomic Rename vs Overwrite: Is os.replace Worth the Cost?

Hands-on atomic rename vs overwrite lab: tempfile+os.replace vs truncate-write with/without fsync. Real ops/s on localhost; crash-safety limits labeled.

1 Oct 20267 min read

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uuid4 vs secrets Token Generation Rate Lab

Hands-on uuid.uuid4 vs secrets.token_hex/urlsafe vs os.urandom ops/s on localhost. Throughput only; uniqueness and collisions not measured in this lab.

1 Oct 20266 min read

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base64 vs hex Encode/Decode Throughput Lab

Hands-on base64 vs hex encode/decode lab on 32MiB buffers with real MB/s measurements in both directions on localhost.

1 Oct 20266 min read

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Python re vs str Methods: Text Scan Throughput Lab

Hands-on Python re vs str methods lab on a 32MiB localhost corpus: count, find, line prefix, case-insensitive, and email scans with real measured MB/s.

1 Oct 20266 min read

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posix_fadvise SEQUENTIAL vs RANDOM: Read Hint Lab

Hands-on posix_fadvise SEQUENTIAL vs RANDOM vs NORMAL lab on localhost: cold and warm 256MiB reads after drop_caches with real measured p50 MB/s and RPS.

1 Oct 20266 min read

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fork COW RSS vs spawn: Python Multiprocessing Lab

Hands-on fork COW vs multiprocessing spawn lab: PSS/Private_Dirty after fork and page dirtying, plus spawn start latency. Real numbers on the lab box.

1 Oct 20266 min read

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orjson vs json in Python: How Much Faster Is orjson?

Hands-on Python json vs orjson vs msgpack lab: encode/decode MB/s on records, nested, and unicode payloads. Real p50 numbers measured on localhost box.

1 Oct 20267 min read

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xxHash vs SHA-256: How Much Faster Is It?

Hands-on SHA-256 vs BLAKE2b vs xxHash hash throughput on 64MiB buffers (SHA-1/SHA3 labeled). Real MB/s with OpenSSL and xxHash versions on the lab box.

1 Oct 20267 min read

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SQLite WAL vs DELETE: Is WAL Really Faster?

Hands-on SQLite WAL vs DELETE vs OFF journal_mode lab: insert/update RPS (FULL/NORMAL sync), plus WAL checkpoint cost. Real p50 numbers on localhost box.

1 Oct 20266 min read

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zstd vs gzip vs lz4: Compression Throughput Lab

Hands-on zstd vs gzip vs lz4 on 64MiB payloads (real /usr text, mixed, urandom). Measured compress/decompress MB/s and ratio at default levels. No Docker.

1 Oct 20267 min read

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