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https://issues.apache.org/jira/browse/TS-3080?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14170526#comment-14170526
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Alexey Ivanov commented on TS-3080:
-----------------------------------

[~briang] Can you also add stat for {{SSL_CTX_sess_set_new_cb}} so we'll have 
full set of stats:
* failed {{SSL_CTX_sess_set_get_cb}} -  
{{proxy.process.ssl.ssl_session_cache_miss}}
* succeeded {{SSL_CTX_sess_set_get_cb}} - 
{{proxy.process.ssl.ssl_session_cache_hit}}
* {{SSL_CTX_sess_set_remove_cb}} - 
{{proxy.process.ssl.ssl_session_cache_eviction}}
* {{SSL_CTX_sess_set_new_cb}} - {{XXX}}

> OpenSSL implementation of TLS session cache is very slow.
> ---------------------------------------------------------
>
>                 Key: TS-3080
>                 URL: https://issues.apache.org/jira/browse/TS-3080
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: Core, SSL
>            Reporter: Brian Geffon
>            Assignee: Brian Geffon
>             Fix For: 5.2.0
>
>
> The OpenSSL implementation of TLS session caching is very slow, we attempted 
> to use it and it's locking and blows up at only a few hundred QPS. I'm going 
> to develop a new TLS session cache in TS that is more performant under 
> highload.



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