android - Connect to mySQL database over LAN without using a webserver -

-

i want have multiple clients connect server on lan , access/modify mysql database in server.

how go doing this? can guys provide resources/links research on topic

to answer question, should able connect mysql database adding jdbc driver project jar file in android studio.

now real app plan distributed thousands of users there security issues, performance issues, , scalability issues.

security issues:

  1. you expose database directly internet opening port public access apps connect. web app adds layer in middle, keeping database access inside intranet.

  2. you expose data directy public providing @ least 1 public account known (i assume way access because managing 1 account per user wouldn't realistic). web app isolates user account database accounts.

  3. by providing access way, android mobile devices can rooted, potentially granting anonymous access data.

performance issues:

  1. with web app in middle, webapp manages connections database. enables sharing connections amongst different users vs. 1 dedicated connection per user have if different devices estable separate connections.

  2. for same reason, can't take advantage of connection pooling, saves overhed of establishing connection database each incoming request.

scalability issues:

  1. as connections not shared number of concurrent users bound number of connections can open @ same time database.

edit 1

i adding alternative thought of involves using web application not implemented using webserver. java nio framework runs on own. limitations of solution need shell access server , java, not common in traditional hostings. checkout netty.


Comments

Post a Comment

Popular posts from this blog

sql - invalid in the select list because it is not contained in either an aggregate function -

-
i can't figure out rewrite sql statement avoid error below msg 8120, level 16, state 1, line 26 column 'staffmember.staffmemberid' invalid in select list because not contained in either aggregate function or group clause. sql statment select (select [dbo].[udf_readstaffmemberbasic](sm.staffmemberid) xml path ('staffmembersummary'), root ('items'), type ), count(sm.staffmemberid) totalresults, ceiling(cast(count(sm.staffmemberid) decimal)/ @pagesize) totalpages staffmember sm inner join staffmembertoadditionalrole ar on sm.staffmemberid = ar.staffmemberid (sm.firstname '%' + @name + '%' or sm.surname '%' + @name + '%') , (@floorid null or sm.floorid = @floorid) , (@directorateid null or sm.directorateid = @directorateid) , (@additionalroleid null or ar.additionalroleid = @additionalroleid) order sm.staffmemberid offset @page * @pagesize rows fe...
Read more

Angularjs unit testing - ng-disabled not working when adding text to textarea -

-
i trying test angularjs component using karma, mocha, power-assert. have textarea , button in component, button disabled based on length of text in textarea. when run component in browser works perfectly. can't figure out how test functionality. here's bit of code. inquiryform.js function inquiryform($scope) { // plan add logic here } angular.module('myapp').component('inquiryform', { controller: inquiryform, controlleras: 'inquiryform', templateurl: 'inquiryform.html' }); inquiryform.html <div class="contact"> <div>thanks contacting us.</div> <form> <textarea ng-model="inquiryform.inquirytext" name=""></textarea> <input type="submit" value="send" ng-disabled="!inquiryform.inquirytext.length"> </form> </div> inquiryformtest.js describe('inquiry form ', () => { let $r...
Read more

How to start daemon on android by adb -

-
can me please, head swollen... i trying run daemon on android emu/device command: adb -s <device_name> shell su -c /dir/daemon <port_number> but nothink happens, , no errors! if do: adb -s <device> shell and form shell cmdline: su -c /dir/daemon <port_number> than work fine. try use shell-script , run: adb -s <device_name> shell sh su -c /dir/script.sh <port_number> and try generate script qt code port number , use: adb -s <device_name> shell sh su -c /dir/script.sh but not helped... problem if enter adb shell previous run daemon - work. problem on different device/emu/iso_image different command format not work. example: adb -s <device_name> shell su -c /dir/daemon <port_number> // work @ emu, not @ iso and vice: adb -s <device_name> shell su -c "/dir/daemon <port_number>" // work @ iso etc. everybody can answer what's matter? sorry english adb shell su -c ...
Read more