How Can I Optimize HTTP GET Requests to Prevent Overwhelming My Data Scraper?

Optimizing HTTP Data Consumption for Scraping

In order to enhance the efficiency of your HTTP GET data scraping operations, it's important to consider the possibility of encountering URLs delivering substantial amounts of data. To safeguard against this, limit the data size the GET request receives, thereby preventing potential bottlenecks.

Solution: Limiting Data Consumption with io.LimitedReader

Fortunately, Go's io package provides a convenient solution - io.LimitedReader. It restricts the amount of data read from a provided io.Reader to a defined limit, effectively cutting off data retrieval once this limit is reached:

limitedReader := &io.LimitedReader{R: response.Body, N: limit}
body, err := io.ReadAll(limitedReader)

In this example, the io.LimitedReader limits the data read from the HTTP response's body to the specified limit.

Alternatively, you can use the io.LimitReader function to achieve the same result:

body, err := io.ReadAll(io.LimitReader(response.Body, limit))

By utilizing io.LimitedReader or io.LimitReader, you can effectively control the amount of data retrieved from HTTP GET requests, preventing your scraper from becoming overwhelmed by excessive data.

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