Re: Pre-fetching some URLs

Ong Beng Hui wrote:

> > > "ttl_pattern ^http:// 7200 80% 10080"
> > > "ttl_pattern ^ftp:// 10080 80% 10080"
> > > "ttl_pattern \.gif$ 10080 80% 10080"
> > > "ttl_pattern /cgi-bin/ 0 0% 10080"
>
> The 3th field specified the TTL if the object doesn't have
> an expiry data.

I was under the impression that the TTL algorithm was as follows:

        if (page has expires header)
        {
                set TTL directly from expires header
        }
        else if (page has last_modified header)
        {
                calculate TTL as last_modified header * %factor (2nd column)
                if (calculated TTL is greater than max TTL (3rd column))
                {
                        set TTL to max TTL (3rd column)
                }
                else
                {
                        set TTL to calculated TTL
                }
        }
        else
        {
                set TTL to default TTL (1st column)
        }

This sound right?
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Received on Thu Oct 24 1996 - 23:18:45 MDT