How to know how many connections are connecting with SpringBoot website?











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The SpringBoot website is deployed in Linux server, and its port number is 9010. We know that netstat is useful to check how many TCP connections are connected to the Linux server.



Now I want to know how many connections are connected with my website. I use command as below:




netstat -an | grep :9010 -c




There are so many connections here. And many of them are in status TIME_WAIT. I know this means that it is going to close.



If I am counting how many http requests SpringBoot is handling at the exact time, should I count the TIME_WAIT connections?



Can anyone give some clue? Thanks.










share|improve this question




























    up vote
    2
    down vote

    favorite












    The SpringBoot website is deployed in Linux server, and its port number is 9010. We know that netstat is useful to check how many TCP connections are connected to the Linux server.



    Now I want to know how many connections are connected with my website. I use command as below:




    netstat -an | grep :9010 -c




    There are so many connections here. And many of them are in status TIME_WAIT. I know this means that it is going to close.



    If I am counting how many http requests SpringBoot is handling at the exact time, should I count the TIME_WAIT connections?



    Can anyone give some clue? Thanks.










    share|improve this question


























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      The SpringBoot website is deployed in Linux server, and its port number is 9010. We know that netstat is useful to check how many TCP connections are connected to the Linux server.



      Now I want to know how many connections are connected with my website. I use command as below:




      netstat -an | grep :9010 -c




      There are so many connections here. And many of them are in status TIME_WAIT. I know this means that it is going to close.



      If I am counting how many http requests SpringBoot is handling at the exact time, should I count the TIME_WAIT connections?



      Can anyone give some clue? Thanks.










      share|improve this question















      The SpringBoot website is deployed in Linux server, and its port number is 9010. We know that netstat is useful to check how many TCP connections are connected to the Linux server.



      Now I want to know how many connections are connected with my website. I use command as below:




      netstat -an | grep :9010 -c




      There are so many connections here. And many of them are in status TIME_WAIT. I know this means that it is going to close.



      If I am counting how many http requests SpringBoot is handling at the exact time, should I count the TIME_WAIT connections?



      Can anyone give some clue? Thanks.







      spring spring-boot tcp






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 22 at 1:58

























      asked Nov 20 at 3:21









      Robin Sun

      1291214




      1291214
























          3 Answers
          3






          active

          oldest

          votes

















          up vote
          0
          down vote



          accepted










          Maybe the question here is not very clear. "How many connections"? The connections can in various status. And often, many of them are in TIME_WAIT.



          Maybe I should say, if I want to know how many connections(web request) the Website is processing at the exacte timestap, I can use below comannd:




          netstat -an |grep -c 9010.*ESTABLISHED




          But if I want to know how many connections(web request) the website has processed around the timestamp(maybe in 60 seconds), I can use below command:




          netstat -an | grep :9010 -c




          Because TIME_WAIT means this request was processed short time ago(For simple, I don't count the Keep-Alive situation).



          Anyone has different opinions? Looking forward reply.






          share|improve this answer






























            up vote
            0
            down vote













            You can also use Actuator plugin inside Spring Boot Application.



            Apart from several monitoring endpoints exposed by it, you can also monitor number of http connections to your application.



            References:



            https://www.callicoder.com/spring-boot-actuator/



            UPDATE:



            To know number of http sessions use "/actuator/sessions" endpoint.



            More details are here:



            https://moelholm.com/2016/08/22/spring-boot-sessions-actuator-endpoint/






            share|improve this answer























            • Hi Ankit, I already tried the Spring Actuator. I only find session amount in the exposed endpoint. But this is session objects in tomcat, not http connections. Could you please tell me the exact endpoint name? Many thanks.
              – Robin Sun
              Nov 28 at 9:12










            • @RobinSun: find updated answer. If you find post useful, kindly upvote it / accept the answer.
              – Ankit
              Nov 28 at 10:10










            • thanks for the effort. But this is still about session objects in tomcat. Not really TCP connections.
              – Robin Sun
              Nov 29 at 1:47


















            up vote
            -1
            down vote













            Try to run



            lsof -i |grep -c 9010.*ESTABLISHED





            share|improve this answer

















            • 3




              Welcome to StackOverflow! Please try to add more details/explanation in addition to the commands/code so that it may help the users looking for an answer.
              – Uzair A.
              Nov 20 at 4:34










            • This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review
              – Zooly
              Nov 20 at 13:17











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            3 Answers
            3






            active

            oldest

            votes








            3 Answers
            3






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            0
            down vote



            accepted










            Maybe the question here is not very clear. "How many connections"? The connections can in various status. And often, many of them are in TIME_WAIT.



            Maybe I should say, if I want to know how many connections(web request) the Website is processing at the exacte timestap, I can use below comannd:




            netstat -an |grep -c 9010.*ESTABLISHED




            But if I want to know how many connections(web request) the website has processed around the timestamp(maybe in 60 seconds), I can use below command:




            netstat -an | grep :9010 -c




            Because TIME_WAIT means this request was processed short time ago(For simple, I don't count the Keep-Alive situation).



            Anyone has different opinions? Looking forward reply.






            share|improve this answer



























              up vote
              0
              down vote



              accepted










              Maybe the question here is not very clear. "How many connections"? The connections can in various status. And often, many of them are in TIME_WAIT.



              Maybe I should say, if I want to know how many connections(web request) the Website is processing at the exacte timestap, I can use below comannd:




              netstat -an |grep -c 9010.*ESTABLISHED




              But if I want to know how many connections(web request) the website has processed around the timestamp(maybe in 60 seconds), I can use below command:




              netstat -an | grep :9010 -c




              Because TIME_WAIT means this request was processed short time ago(For simple, I don't count the Keep-Alive situation).



              Anyone has different opinions? Looking forward reply.






              share|improve this answer

























                up vote
                0
                down vote



                accepted







                up vote
                0
                down vote



                accepted






                Maybe the question here is not very clear. "How many connections"? The connections can in various status. And often, many of them are in TIME_WAIT.



                Maybe I should say, if I want to know how many connections(web request) the Website is processing at the exacte timestap, I can use below comannd:




                netstat -an |grep -c 9010.*ESTABLISHED




                But if I want to know how many connections(web request) the website has processed around the timestamp(maybe in 60 seconds), I can use below command:




                netstat -an | grep :9010 -c




                Because TIME_WAIT means this request was processed short time ago(For simple, I don't count the Keep-Alive situation).



                Anyone has different opinions? Looking forward reply.






                share|improve this answer














                Maybe the question here is not very clear. "How many connections"? The connections can in various status. And often, many of them are in TIME_WAIT.



                Maybe I should say, if I want to know how many connections(web request) the Website is processing at the exacte timestap, I can use below comannd:




                netstat -an |grep -c 9010.*ESTABLISHED




                But if I want to know how many connections(web request) the website has processed around the timestamp(maybe in 60 seconds), I can use below command:




                netstat -an | grep :9010 -c




                Because TIME_WAIT means this request was processed short time ago(For simple, I don't count the Keep-Alive situation).



                Anyone has different opinions? Looking forward reply.







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Nov 28 at 8:27

























                answered Nov 28 at 8:19









                Robin Sun

                1291214




                1291214
























                    up vote
                    0
                    down vote













                    You can also use Actuator plugin inside Spring Boot Application.



                    Apart from several monitoring endpoints exposed by it, you can also monitor number of http connections to your application.



                    References:



                    https://www.callicoder.com/spring-boot-actuator/



                    UPDATE:



                    To know number of http sessions use "/actuator/sessions" endpoint.



                    More details are here:



                    https://moelholm.com/2016/08/22/spring-boot-sessions-actuator-endpoint/






                    share|improve this answer























                    • Hi Ankit, I already tried the Spring Actuator. I only find session amount in the exposed endpoint. But this is session objects in tomcat, not http connections. Could you please tell me the exact endpoint name? Many thanks.
                      – Robin Sun
                      Nov 28 at 9:12










                    • @RobinSun: find updated answer. If you find post useful, kindly upvote it / accept the answer.
                      – Ankit
                      Nov 28 at 10:10










                    • thanks for the effort. But this is still about session objects in tomcat. Not really TCP connections.
                      – Robin Sun
                      Nov 29 at 1:47















                    up vote
                    0
                    down vote













                    You can also use Actuator plugin inside Spring Boot Application.



                    Apart from several monitoring endpoints exposed by it, you can also monitor number of http connections to your application.



                    References:



                    https://www.callicoder.com/spring-boot-actuator/



                    UPDATE:



                    To know number of http sessions use "/actuator/sessions" endpoint.



                    More details are here:



                    https://moelholm.com/2016/08/22/spring-boot-sessions-actuator-endpoint/






                    share|improve this answer























                    • Hi Ankit, I already tried the Spring Actuator. I only find session amount in the exposed endpoint. But this is session objects in tomcat, not http connections. Could you please tell me the exact endpoint name? Many thanks.
                      – Robin Sun
                      Nov 28 at 9:12










                    • @RobinSun: find updated answer. If you find post useful, kindly upvote it / accept the answer.
                      – Ankit
                      Nov 28 at 10:10










                    • thanks for the effort. But this is still about session objects in tomcat. Not really TCP connections.
                      – Robin Sun
                      Nov 29 at 1:47













                    up vote
                    0
                    down vote










                    up vote
                    0
                    down vote









                    You can also use Actuator plugin inside Spring Boot Application.



                    Apart from several monitoring endpoints exposed by it, you can also monitor number of http connections to your application.



                    References:



                    https://www.callicoder.com/spring-boot-actuator/



                    UPDATE:



                    To know number of http sessions use "/actuator/sessions" endpoint.



                    More details are here:



                    https://moelholm.com/2016/08/22/spring-boot-sessions-actuator-endpoint/






                    share|improve this answer














                    You can also use Actuator plugin inside Spring Boot Application.



                    Apart from several monitoring endpoints exposed by it, you can also monitor number of http connections to your application.



                    References:



                    https://www.callicoder.com/spring-boot-actuator/



                    UPDATE:



                    To know number of http sessions use "/actuator/sessions" endpoint.



                    More details are here:



                    https://moelholm.com/2016/08/22/spring-boot-sessions-actuator-endpoint/







                    share|improve this answer














                    share|improve this answer



                    share|improve this answer








                    edited Nov 28 at 10:09

























                    answered Nov 28 at 8:35









                    Ankit

                    55121338




                    55121338












                    • Hi Ankit, I already tried the Spring Actuator. I only find session amount in the exposed endpoint. But this is session objects in tomcat, not http connections. Could you please tell me the exact endpoint name? Many thanks.
                      – Robin Sun
                      Nov 28 at 9:12










                    • @RobinSun: find updated answer. If you find post useful, kindly upvote it / accept the answer.
                      – Ankit
                      Nov 28 at 10:10










                    • thanks for the effort. But this is still about session objects in tomcat. Not really TCP connections.
                      – Robin Sun
                      Nov 29 at 1:47


















                    • Hi Ankit, I already tried the Spring Actuator. I only find session amount in the exposed endpoint. But this is session objects in tomcat, not http connections. Could you please tell me the exact endpoint name? Many thanks.
                      – Robin Sun
                      Nov 28 at 9:12










                    • @RobinSun: find updated answer. If you find post useful, kindly upvote it / accept the answer.
                      – Ankit
                      Nov 28 at 10:10










                    • thanks for the effort. But this is still about session objects in tomcat. Not really TCP connections.
                      – Robin Sun
                      Nov 29 at 1:47
















                    Hi Ankit, I already tried the Spring Actuator. I only find session amount in the exposed endpoint. But this is session objects in tomcat, not http connections. Could you please tell me the exact endpoint name? Many thanks.
                    – Robin Sun
                    Nov 28 at 9:12




                    Hi Ankit, I already tried the Spring Actuator. I only find session amount in the exposed endpoint. But this is session objects in tomcat, not http connections. Could you please tell me the exact endpoint name? Many thanks.
                    – Robin Sun
                    Nov 28 at 9:12












                    @RobinSun: find updated answer. If you find post useful, kindly upvote it / accept the answer.
                    – Ankit
                    Nov 28 at 10:10




                    @RobinSun: find updated answer. If you find post useful, kindly upvote it / accept the answer.
                    – Ankit
                    Nov 28 at 10:10












                    thanks for the effort. But this is still about session objects in tomcat. Not really TCP connections.
                    – Robin Sun
                    Nov 29 at 1:47




                    thanks for the effort. But this is still about session objects in tomcat. Not really TCP connections.
                    – Robin Sun
                    Nov 29 at 1:47










                    up vote
                    -1
                    down vote













                    Try to run



                    lsof -i |grep -c 9010.*ESTABLISHED





                    share|improve this answer

















                    • 3




                      Welcome to StackOverflow! Please try to add more details/explanation in addition to the commands/code so that it may help the users looking for an answer.
                      – Uzair A.
                      Nov 20 at 4:34










                    • This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review
                      – Zooly
                      Nov 20 at 13:17















                    up vote
                    -1
                    down vote













                    Try to run



                    lsof -i |grep -c 9010.*ESTABLISHED





                    share|improve this answer

















                    • 3




                      Welcome to StackOverflow! Please try to add more details/explanation in addition to the commands/code so that it may help the users looking for an answer.
                      – Uzair A.
                      Nov 20 at 4:34










                    • This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review
                      – Zooly
                      Nov 20 at 13:17













                    up vote
                    -1
                    down vote










                    up vote
                    -1
                    down vote









                    Try to run



                    lsof -i |grep -c 9010.*ESTABLISHED





                    share|improve this answer












                    Try to run



                    lsof -i |grep -c 9010.*ESTABLISHED






                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Nov 20 at 4:22









                    sergey_liu

                    1




                    1








                    • 3




                      Welcome to StackOverflow! Please try to add more details/explanation in addition to the commands/code so that it may help the users looking for an answer.
                      – Uzair A.
                      Nov 20 at 4:34










                    • This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review
                      – Zooly
                      Nov 20 at 13:17














                    • 3




                      Welcome to StackOverflow! Please try to add more details/explanation in addition to the commands/code so that it may help the users looking for an answer.
                      – Uzair A.
                      Nov 20 at 4:34










                    • This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review
                      – Zooly
                      Nov 20 at 13:17








                    3




                    3




                    Welcome to StackOverflow! Please try to add more details/explanation in addition to the commands/code so that it may help the users looking for an answer.
                    – Uzair A.
                    Nov 20 at 4:34




                    Welcome to StackOverflow! Please try to add more details/explanation in addition to the commands/code so that it may help the users looking for an answer.
                    – Uzair A.
                    Nov 20 at 4:34












                    This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review
                    – Zooly
                    Nov 20 at 13:17




                    This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review
                    – Zooly
                    Nov 20 at 13:17


















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