sql server - Service Broker queue rollback on receive -


as using base on here

service broker provides automatic poison message detection. automatic poison message detection sets queue status off if transaction receives messages queue rolls 5 times. feature provides safeguard against catastrophic failures application cannot detect programmatically.

i have windows service application polls sb queue , send them web service endpoint. since, should handle "server goes-off" issues ─get message queue, include "queue item receiving" , "queue item sending" methods same transaction. on first exception (httprequestexception), start pinging server predefined timeout continue/close program.

however, rolling 5 times problem, understand whatever time gap between 5 consecutive rollbacks increments rollback count globally, queue disabled eventually. right on this? queue has timeout zeroing rollback count?

if behaviour, better exclude "queue item sending" method transaction? if this, should follow approach that, on exception keep message in resource(table, file) sent later, or other alternatives...

what using tables queues keep transaction united , freed sb's rollback issue? reliable sb?

afaik, 5 consecutive rollbacks of same message on queue poison_message_handling = on disable queue regardless of time gap.

have considered turning off poison message handling queue? onus on application distinguish between true poison message (one can never processed) versus problem external service dependency. in first case, log problem message elsewhere , commit instead of rollback.

there other patterns 1 use, such re-queuing message , committing depends on whether messages must processed in order.


Comments

Post a Comment

Popular posts from this blog

PHP and MySQL WP -

i trying accomplish 2 things here code. writing php directly wp page using insert php plugin. 1) query mysql database , return results 1 column 4 columns. 2) make each result own hyperlink directs user new wp page runs new query on page. i able query show results , turn results dynamic hyperlink, cannot formatting down. right returns result 1 column. here have: [insert_php] $servername = "localhost"; $username = "login"; //edited privacy $password = "password"; //edited privacy $database = "database"; //edited privacy // create connection $conn = new mysqli($servername, $username, $password, $database); // check connection if ($conn->connect_error) { die("connection failed: " . $conn->connect_error); } echo "connected successfully"; //get results database $result = mysqli_query($conn,"select mine mines order mine"); $all_property = array(); //declare array saving property //showing proper...
Read more

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

go - golang pprof for c library code -

i have been trying profile golang application pprof, seems details of c code(linked static library) missed in output result. flame graph from frame graph can see c code time consuming reported within "runtime._externalcode", no details @ all. , sure static library compiled debug enable. so there way make pprof details(like stack trace) of 3rd party c code? or there other golang profiling tool this?
Read more