Two clients to fetch 1000 orders from API (/item/{id}), write to CSV.

Threaded client: client_threads.py → items_threads.csv Async client: client_async.py → items_async.csv

1. Install deps: uv sync
2. Run: uv run client_threads.py or uv run client_async.py

• TOTAL_ITEMS = 1000 — number of orders to fetch and write
• RATE_LIMIT = 18 — max requests per second (to avoid server overload)
• MAX_WORKERS = 10 (threads) / MAX_CONCURRENT = 50 (async) — controls parallelism
• RETRY_ATTEMPTS = 5 — how many times to retry on error

Both clients download up to 1000 orders from the API, handling errors and rate limits. If the server is down or slow, the client will retry up to 5 times per order. Results are saved in a CSV file with columns for each order field.

3. Run the client:

   uv run client_threads.py

4. Output will be in items_threads.csv.