message: change graph to sum
diff: @@ -236,12 +236,12 @@ export class TheCloudwatchDashboardStack extends cdk.Stack {
  table.metricSuccessfulRequestLatency({dimensions: {"TableName":table.tableName, "Operation": "Query"}}),
  ], true),
  this.buildGraphWidget('DynamoDB Errors', [
  - table.metric('UserErrors'),
  - table.metric('SystemErrors')
  + table.metric('UserErrors', {statistic: 'sum'}),
  + table.metric('SystemErrors', {statistic: 'sum'})
  ], true),
  this.buildGraphWidget('DynamoDB Throttles', [
  - table.metric('ReadThrottleEvents'),
  - table.metric('WriteThrottleEvents')
  + table.metric('ReadThrottleEvents', {statistic: 'sum'}),
  + table.metric('WriteThrottleEvents', {statistic: 'sum'})
  ], true)
  )
  