Tools / Crawler / rateLimit
Type: number
Default: 8
Parameter syntax
rateLimit: rate_limit

About this parameter

Number of concurrent tasks per second that can run for this configuration.

A higher number means more crawls per second. This number works with the following formula:

MAX ( urls_added_in_the_last_second, urls_currently_being_processed ) <= rateLimit

If fetching, processing, and uploading URLs is taking less than a second, your crawler processes rateLimit URLs per second. However, if each URL on average takes 4 seconds to be processed, your crawler processes rateLimit / 4 pages per second.

It’s recommend to start with a low value (e.g. 2) and update it if you need faster crawling: a high rateLimit can have a huge impact on bandwidth cost and server resource consumption.


  rateLimit: 5,

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