SocialHz Team · 9 November 2026

How to monitor Taiwan marketplace prices at scale

Fetching is the easy part. Here is how to choose what to watch, keep a clean history, and know when a number can be trusted.

1. Decide what to watch, and give each group its own schedule.
2. Match the schedule to the market: 10,000 products checked 4 times a day is 1.2 million requests a month.
3. Keep every observation: append a row for every check and never update one.
4. A different number isn't always a price change: units, variations, promotions and noise.
5. Expect retries, and make them harmless with a key for each observation.
6. Measure each link, not each batch, and tell removed listings apart from failures.
7. Check the data before anyone reads it.
8. Count the cost per usable record.

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