Tomcat connector query

Hi All,

Could you please suggest which all tomcat connector is available to use for jira (configured https) instance? Currently we are using NIO connector. Is the NIO is the better one or do we have something else?

Please see our server.xml file.

<!-- Customized Tomcat configuration for Atlassian Bamboo -->
<Server port="8101" shutdown="SHUTDOWN">

  <!-- Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="off" / -->

  <Listener className="org.apache.catalina.core.JasperListener" />
  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"/>
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>

  <Service name="Catalina">
    <Executor name="main" namePrefix="HTTP" />
    <Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol" connectionTimeout="20000"  maxHeaderSize="8192" executor="main" redirectPort="443" URIEncoding="UTF-8"
        scheme="https" proxyName="domain name" proxyPort="443" secure="false" useBodyEncodingForURI="true"/>
    <Engine name="Catalina" defaultHost="localhost">
      <Host name="localhost">
          <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="access." suffix=".log" pattern="common" resolveHosts="false"/>


If possible, could you please share some docs to understand this in better, thanks.

2 answers

1 accepted


not sure if I understand your question completely. Your JIRA is running on Tomcat which provides several connectors to use - BIO (blocking), NIO (non-blocking) and APR (Apache Portable Runtime). To configure one of these connectors you can follow the tomcat configuration for connectors [1].

At the ent of this page you will find a connector comparison to figure out the main differences [2].

NIO might be interesting for you if you want to use low level socket properties. From [4]:

"BIO means if you use http with keep-alive parameter then you will continue to use that thread in order to maintain keep-alive connection while with Non-Blocking IO Connectors you don't need to use thread to maintain keep-alive requests, so you can make efficient use of threads here "

Because I don't know much about JIRA and its runtime behaviour I cannot recommend one connector in advance. Based on the JIRA documentation they use the HTTP standard (BIO) connector - here you find the HTTPS configuration [3].

A benchmark on this topic would be nice.

HTH, Sabine





Thanks for the detailed information :)

I guess there are three connectors available,
1. org.apache.coyote.http11.Http11Protocol - same as HTTP/1.1 (BIO)
2. org.apache.coyote.http11.Http11NioProtocol - non blocking Java connector (NIO)
3. org.apache.coyote.http11.Http11AprProtocol - the APR connector (APR)

So in our case, if we want to change NIO to any other which all steps to we need to take care? (actually our JIRA is configured over https). Please suggest.

Suggest an answer

Log in or Sign up to answer
Atlassian Community Anniversary

Happy Anniversary, Atlassian Community!

This community is celebrating its one-year anniversary and Atlassian co-founder Mike Cannon-Brookes has all the feels.

Read more
Community showcase
Julia Dillon
Posted Tuesday in Jira

Tell us how your team runs on Jira!

Hey Atlassian Community! Today we are launching a bunch of customer stories about the amazing work teams, like Dropbox and Twilio, are doing with Jira. You can check out the stories here. The thi...

225 views 1 18
Join discussion

Atlassian User Groups

Connect with like-minded Atlassian users at free events near you!

Find a group

Connect with like-minded Atlassian users at free events near you!

Find my local user group

Unfortunately there are no AUG chapters near you at the moment.

Start an AUG

You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs

Groups near you