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File Name	File Size		Posted by	Date
patch.fastcgi.cache	8.7 KB	open | download	Igor Sysoev	03/23/2009	Read message

Igor Sysoev wrote:
> On Tue, Mar 24, 2009 at 05:30:02PM +0100, J?r?me Loyet wrote:
>
>> 2009/3/24 Igor Sysoev <is@rambler-co.ru>:
>>> On Tue, Mar 24, 2009 at 05:07:23PM +0100, J?r?me Loyet wrote:
>>>
>>>> 2009/3/23 Igor Sysoev <is@rambler-co.ru>:
>>>>> On Mon, Mar 23, 2009 at 10:42:45PM +0800, Delta Yeh wrote:
>>>>>
>>>>>> How to use the cache feature?
>>>>>> What kind of cache does it support?
>>>>> Here is configuraiton example:
>>>>>
>>>>> http {
>>>>> proxy_cache_path /path/to/cache levels=1:2
>>>>> keys_zone=NAME:10m
>>>>> inactive=5m clean_time=2h00m;
>>>>>
>>>>> server {
>>>>> location / {
>>>>> proxy_pass http://127.0.0.1;
>>>>>
>>>>> proxy_cache NAME;
>>>>>
>>>>> proxy_cache_valid 200 302 1h;
>>>>> proxy_cache_valid 301 1d;
>>>>> proxy_cache_valid any 1m;
>>>>>
>>>>> proxy_cache_min_uses 1;
>>>>>
>>>>> proxy_cache_use_stale error timeout invalid_header http_500;
>>>>> }
>>>>> }
>>>>>
>>>>> The cache currently ignores backend's Cache-Control, Expires, etc.
>>>> hi Igor,
>>>>
>>>> Do I understand correctly the proxy_cache_use_stale directive:
>>>>
>>>> proxy_cache_use_stale error timeout invalid_header http_500;
>>>>
>>>> If cache is still valid {
>>>> serve content from cache
>>>> } else {
>>>> Ask fresh data to the backend
>>>> if connection status IS IN (proxy_cache_use_stale parameters) {
>>>> serve content from cache
>>>> } else {
>>>> act as normal
>>>> }
>>>> }
>>> Yes.
>> Other question, how can I determine the maximum number of cache entrie
>> I have with a particular conf ?
>>
>> proxy_cache_path /data/nginx/cache keys_zone=one:10m;
>>
>> What is the size of keys on shared mem (X bytes). So that I can
>> extrapole the maximum number N of cache entries with YMo of shared
>> memory (N = (Y x 1024 x 1024) / X). (if there is nothing elese in the
>> shared mem and if the key size is constant)
>
> The key size is 128 bytes.
>
>