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https://issues.apache.org/jira/browse/HTTPCLIENT-2180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17422239#comment-17422239
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Oleg Kalnichevski commented on HTTPCLIENT-2180:
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> SPNEGO isn't stateful as far as HTTP is concerned. I haven't seen more than
> one round trip for this.
[~michael-o] This is not a matter of many roundrips but a matter of a security
context / user identity being associated with the successfully authenticated
NTLM and SPNEGO connection rather than passed with each and every request like
in case of the standard BASIC and DIGEST schemes.
Oleg
> Pre-init minimum number of connections
> --------------------------------------
>
> Key: HTTPCLIENT-2180
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2180
> Project: HttpComponents HttpClient
> Issue Type: New Feature
> Components: HttpClient (async), HttpClient (classic)
> Reporter: Anurag Agarwal
> Priority: Minor
> Labels: volunteers-wanted
> Fix For: Future
>
>
> Most of the applications suffer from a problem of cold start where we don't
> have connections created at the start of the application and thus the first
> few requests suffer by making a lot of connections.
> During deployment this can even pile up a lot of not completed request and
> may lead to losses.
> One suggestion I had in mind is to create few connections before the
> application has begun from the intended endpoints.
> Also sometimes the nautre of your traffic can be spiky in which scenario
> opening and closing a lot of connections also doesn't make sense.
>
> These can be solved with either or both of the suggestions:
> # Have a minConnectionPerHost policy in connection pool which won't let
> connection pool for a host to go below this number or make a new connection
> when it does. At the start of the http client these minimum connections will
> be created to the end services.
> # Provide an easy mechanism for use to create connections via
> ConnectionManager. Currently in PoolingAsyncConnectionManager one must give
> ConnectionInitiator which make it difficult to directly use the connection
> manager to create connections.
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