If the url changes from one request to the next without a special client, 
wouldn't the responses be two separate cache entries?

sam

> On Jan 5, 2016, at 7:00 AM, Oleg Kalnichevski <ol...@apache.org> wrote:
> 
>> On Tue, 2016-01-05 at 06:28 -0500, Sam Perman wrote:
>> Maybe there is another way to implement what I'm trying to do? In my case, 
>> if the backend request fails, I want to retry the request against a 
>> different url, but still cache the response.
> 
> Why do you need a special client for that?
> 
> Oleg
> 
>> thanks
>> Sam
>> 
>>>> On Jan 5, 2016, at 4:58 AM, Oleg Kalnichevski <ol...@apache.org> wrote:
>>>> 
>>>> On Mon, 2016-01-04 at 17:21 -0500, Sam Perman wrote:
>>>> Hello
>>>> 
>>>> I'm using the CachingHttpClient in a way that is deprecated in 4.5 and am
>>>> trying to figure out the right non-deprecated way to do this.
>>>> 
>>>> In my cause, I have a custom implementation of HttpClient that will do some
>>>> request rewriting and retrying if it sees certain error conditions.
>>>> 
>>>> This is what the old deprecated code looks like:
>>>> 
>>>>       CacheConfig config = buildCacheConfig();
>>>>       HttpClient myBackendClient = new CustomHttpClient();
>>>>       CachingHttpClient cachingHttpClient = new
>>>> CachingHttpClient(myBackendClient, config);
>>>> 
>>>> It looks like the recommended way to build caching http clients in 4.5 is
>>>> to use the CachingHttpClientBuilder, but I see no way to provide my own
>>>> implementation of HttpClient for use as the backend. Is this possible to do
>>>> in a non deprecated way?
>>> 
>>> Sam,
>>> You can't. The problem is that caching logic needs to be inserted at a
>>> particular point in the protocol processing chain in order to work
>>> correctly in all cases. The approach of adding a caching layer as a
>>> decorator for an arbitrary HttpClient instance turned out to be not good
>>> enough.
>>> 
>>> Oleg
>>> 
>>> 
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