Reduce default DynamoDB write capacity from 3000 to 1000 (#1673)

We've made a lot of efficiency improvements, so reduce the default
capacity.

No single figure will work for everyone, but we can assume most people
running with the default are running a small installation to check it
out, so let's give them a smaller bill.

Signed-off-by: Bryan Boreham <[email protected]>

Author: bboreham

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## master / unreleased
 
+* [CHANGE] In table-manager, default DynamoDB capacity was reduced from 3,000 units to 1,000 units. We recommend you do not run with the defaults: find out what figures are needed for your environment and set that via `-dynamodb.periodic-table.write-throughput` and `-dynamodb.chunk-table.write-throughput`.
 * [CHANGE] `--alertmanager.configs.auto-slack-root` flag was dropped as auto Slack root is not supported anymore. #1597
 * [ENHANCEMENT] Upgraded Prometheus to 2.12.0 and Alertmanager to 0.19.0. #1597
 

pkg/chunk/table_manager.go

@@ -98,7 +98,7 @@ func (cfg *TableManagerConfig) RegisterFlags(f *flag.FlagSet) {
 
 // RegisterFlags adds the flags required to config this to the given FlagSet.
 func (cfg *ProvisionConfig) RegisterFlags(argPrefix string, f *flag.FlagSet) {
-	f.Int64Var(&cfg.ProvisionedWriteThroughput, argPrefix+".write-throughput", 3000, "DynamoDB table default write throughput.")
+	f.Int64Var(&cfg.ProvisionedWriteThroughput, argPrefix+".write-throughput", 1000, "DynamoDB table default write throughput.")
 	f.Int64Var(&cfg.ProvisionedReadThroughput, argPrefix+".read-throughput", 300, "DynamoDB table default read throughput.")
 	f.BoolVar(&cfg.ProvisionedThroughputOnDemandMode, argPrefix+".enable-ondemand-throughput-mode", false, "Enables on demand throughput provisioning for the storage provider (if supported). Applies only to tables which are not autoscaled")
 	f.Int64Var(&cfg.InactiveWriteThroughput, argPrefix+".inactive-write-throughput", 1, "DynamoDB table write throughput for inactive tables.")