CloudWatch resolution

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EC2

name detail normal to typical note
Network-In/Out Byte/Minute Byte/5 Minutes bps = X * 8 /(60 or 300)
Network-Count In/Out Counts/5 Minutes Counts/5 Minutes PPS = X / 300 Detail 5min

EBS

name detail to typical note
Volume Write&Read Ops Ops in 5 mins IOPS = X / 300 GAUGE (Avg = Sum = Max...)
Volume Write&Read Bytes Bytes per Ops in 5 mins Byte/Sec = Sum(X) / 300 Data Samples = IOPS

EC2 @ Management Console EBS volume view has Bandwidth (KiB/s) and Throupghput (Ops/s), that pre-caluculated metrics Bandwidth (sum) = (KiBs) Throughput (any except sample count) = (IOPS) .

ElastiCache Redis

name to typical note
GetTypeCmds QPS = X / 60 RAW = Count/Minute (get,mget,hget)
SetTypeCmds QPS = X / 60 RAW = Count/Minute (set, hset)

RDS Aurora

http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Aurora.Monitoring.html

name to typical note
Queries X RAW = QPS
SelectThroughput X RAW = QPS
AuroraReplicaLag X gauge
DatabaseConnections - -
Volume(Read,Write)IOPs X gauge RAW = IOPS (Avg per 5min)

DynamoDB

See. http://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/dynamo-metricscollected.html

name to typical note
Consumed(Read/Write)CapacityUnits units/sec = X(sum) /(60 or 300) Dimensions (Table or GSI)
UserErrors Errors/sec = X(counts) / (60 or 300) NO dimentions ↓↓
(Write/Read)ThrottleEvents - No data No metrics(No 0)