Building Robust Windows Azure Applications with P&P Principal Consultant, Readify AZR323a

public class WorkerRole : RoleEntryPoint { private Autoscaler _autoscaler;... public override bool OnStart() { _autoscaler = EnterpriseLibraryContainer.Current. GetInstance (); _autoscaler.Start();... } public override void OnStop() { _autoscaler.Stop();... } public class WorkerRole : RoleEntryPoint { private Autoscaler _autoscaler;... public override bool OnStart() { _autoscaler = EnterpriseLibraryContainer.Current. GetInstance (); _autoscaler.Start();... } public override void OnStop() { _autoscaler.Stop();... } Changes in code

<rules xmlns= " -->... <rules xmlns= " -->...

<performanceCounter alias="CPU" performanceCounterName="\Processor(_Total)\% Processor Time" source="SM.Website" timespan="00:05:00" aggregate="Average"/> <performanceCounter alias="CPU" performanceCounterName="\Processor(_Total)\% Processor Time" source="SM.Website" timespan="00:05:00" aggregate="Average"/>

<role roleAlias=“SM.Website” scaleDownCooldown=“00:10:00” scaleUpCooldown=“00:10:00” scaleDownOnlyinLastMinutesOfHour=“10” scaleUpOnlyInFirstMinutesOfHour=“30”> <role roleAlias=“SM.Website” scaleDownCooldown=“00:10:00” scaleUpCooldown=“00:10:00” scaleDownOnlyinLastMinutesOfHour=“10” scaleUpOnlyInFirstMinutesOfHour=“30”>

demo Name Title Group WASABi in action

Transient Errors Handling them using TOPAZ

//Use retry aware connection using (var conn = new ReliableSqlConnection (connString, retryPolicy)) { conn.Open(); var cmd = conn.CreateCommand(); cmd.CommandText = sqlStmt; //retry aware ExecuteCommand int count = cmd.ExecuteScalar(); } //Use retry aware connection using (var conn = new ReliableSqlConnection (connString, retryPolicy)) { conn.Open(); var cmd = conn.CreateCommand(); cmd.CommandText = sqlStmt; //retry aware ExecuteCommand int count = cmd.ExecuteScalar(); }

sqlRetryPolicy.ExecuteAction(() => { // Invoke a LinqToSQL query. }); return sqlRetryPolicy.ExecuteAction >( () => { // Invoke a EF LINQ query return result; }); sqlRetryPolicy.ExecuteAction(() => { // Invoke a LinqToSQL query. }); return sqlRetryPolicy.ExecuteAction >( () => { // Invoke a EF LINQ query return result; });

demo Name Title Group TOPAZ in action