Increate the throughput rate:

Error: PutItem [400]: The level of configured provisioned throughput for the table was exceeded. Consider increasing your provisioning level with the UpdateTable API

client > db.describeTable('s2-event', function(err, res){console.log(res)});

client > { CreationDateTime: 1437661404.404,
  ItemCount: 79055,
  KeySchema: { HashKeyElement: { AttributeName: 'ACTIVITYID', AttributeType: 'N' } },
  ProvisionedThroughput:
   { LastDecreaseDateTime: 1437667880.514,
     LastIncreaseDateTime: 1437742235.744,
     NumberOfDecreasesToday: 0,
     ReadCapacityUnits: 4,
     WriteCapacityUnits: 4 },
  TableName: 's2-event',
  TableSizeBytes: 21046796,
  TableStatus: 'ACTIVE' }

db.updateTable('s2-event', {write:5, read:4}, print)

client > { CreationDateTime: 1437661404.404,
  ItemCount: 79055,
  KeySchema: { HashKeyElement: { AttributeName: 'ACTIVITYID', AttributeType: 'N' } },
  ProvisionedThroughput:
   { LastDecreaseDateTime: 1437667880.514,
     LastIncreaseDateTime: 1437744620.53,
     NumberOfDecreasesToday: 0,
     ReadCapacityUnits: 4,
     WriteCapacityUnits: 4 },
  TableName: 's2-event',
  TableSizeBytes: 21046796,
  TableStatus: 'UPDATING' }
client > db.describeTable('s2-event', print)
undefined
client > { CreationDateTime: 1437661404.404,
  ItemCount: 79055,
  KeySchema: { HashKeyElement: { AttributeName: 'ACTIVITYID', AttributeType: 'N' } },
  ProvisionedThroughput:
   { LastDecreaseDateTime: 1437667880.514,
     LastIncreaseDateTime: 1437744626.765,
     NumberOfDecreasesToday: 0,
     ReadCapacityUnits: 4,
     WriteCapacityUnits: 5 },
  TableName: 's2-event',
  TableSizeBytes: 21046796,
  TableStatus: 'ACTIVE' }