notification in saas application over azure -


we working on saas based application (built on azure). in application web server , app server shared among tenants database separate (sql azure).

now there need implement notification service can generate notifications based on events subscriptions. system can generate different kind of event (like account locked , many other) , user can configure notification rule on these events. notification can in form of email , sms.

we planning implement queue events. event notifier push on queue. notification engine subscribe queue. whenever receive new event, check if there notification rule configured on type of event or not. if yes, create notification, result emails/sms. these emails/sms can stored in database or pushed queue. different background process (worker role) can process these emails.

here queries.

  • should keep 1 single queue (for events) tenants or create separate queue different tenants. if keep single queue, can shared subscriber service can subscribe queue. can scale in-out machine.

  • since have different databases each tenant, can store emails respective databases , using service, can pool database , send email after defined interval. not sure how share subscriber code in case.

  • we can store mails in nosql database (like table storage in azure). subscriber (window service/worker role) can pool table , send mails after defined interval. again, scaling can challenge here too.

  • we can store emails in queue (rabbitmq instance). worker role can subscribe queue. scaling of worker role should not issue in case keep single queue tenant.

please provide inputs on these points.

thanks in advance

i separate queues not tenants function. queue handlers specific type of message processing.

ie: order processing queue, account setup queue, , etc.

creating queues tenant /headache/ manage when want scale based on them , want presumably sync/add/remove them customers come , leave. so, avoid scenario

ultimately, scaling based on multiple queues harder without auto-scaling services such cloudmonix (a commercial product built)

hth


Comments

Post a Comment

Popular posts from this blog

toolbar - How to add link to user registration inside toobar in admin joomla 3 custom component -

im trying write component admin side , need add user creation. dont want duplicate existing codes add link. know how add task not simple link toolbar. thx help. if wanting button opens new user screen can try in component: $bar = jtoolbar::getinstance('toolbar'); $bar->appendbutton('link', 'users', 'new user','index.php?option=com_users&task=user.add'); you need add view.html.php file wherever you're creating toolbar. is need?
Read more

linux - disk space limitation when creating war file -

i have 1 gb disk space limitation hosting app , have used 700mb of it. however want create war file directory big (around 600mb) using command : jar -cvf root.war folderpath that's why encounter quota limitation , can't following. i'm looking way delete folder content when it's applying archive conserve disk space take note can't install zip tool in ssh shell ~ the code works on test directories, test first anyway, deletes files. it's not efficient. assumptions: 300mb free space, in destructively compress 600mb folderpath directory. none of files big -- if file in folderpath 300mb or larger, fail. notes: if ' $out ' file exists, nothing. first find pipes file list while , if ' $out ' doesn't exist in loop, create it, don't update -- if does exist, update it. each pass adds 1 more file, deletes unless file directory. after loop finishes delete empty directories too. unset u ; in=folderpath ; out=roo...
Read more

How to provide Authorization & Authentication using Asp.net, C#? -

Image
i have asp.net application in c#. i have provide page authorization specific user/usergroup. i have created 2 tables in database: 1) pagename 2)permissions[insert, update, view, delete] but i'm unable match tables , permissions assigning... can 1 please me, how created tables in database , how coding. please me. you can below explanation. configure access specific file , folder, set forms-based authentication. request page in application redirected logon.aspx automatically. in web.config file, type or paste following code. this code grants users access default1.aspx page , subdir1 folder . <configuration> <system.web> <authentication mode="forms" > <forms loginurl="login.aspx" name=".aspnetauth" protection="none" path="/" timeout="20" > </forms> </authentication> <!-- section denies access files in...
Read more