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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

Jérôme 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)
>
> Thx
> ++ jerome
>
>