# Amazon CloudWatch

Amazon CloudWatch is an observability service for monitoring and optimizing applications, infrastructure, metrics, logs, and traces.

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## AWS STS simplifies session token size limits and adds session token size monitoring

DevFeed: [AWS STS simplifies session token size limits and adds session token size monitoring](<https://devfeed.tech/articles/aws-sts-simplifies-session-token-size-limits-and-adds-session-token-size-monitoring-26907.md>)

Original publisher: [Read original article](<https://aws.amazon.com/blogs/security/aws-sts-simplifies-session-token-size-limits-and-adds-session-token-size-monitoring/>)

Author: Rishi Tripathy

Published: 2026-09-15T22:21:59Z

Content type: release

Language: en

Sources: [AWS Security Blog](<https://devfeed.tech/sources/aws-security-blog.md>)

Topics: [Amazon Web Services](<https://devfeed.tech/topics/aws.md>), [Security](<https://devfeed.tech/topics/security.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>), [Amazon CloudWatch](<https://devfeed.tech/topics/amazon-cloudwatch.md>), [AWS CloudTrail](<https://devfeed.tech/topics/aws-cloudtrail.md>), [API](<https://devfeed.tech/topics/api.md>)

Tags: [advanced-300](<https://devfeed.tech/tags/advanced-300.md>), [amazon-cloudwatch](<https://devfeed.tech/tags/amazon-cloudwatch.md>), [apis](<https://devfeed.tech/tags/apis.md>), [aws](<https://devfeed.tech/tags/aws.md>), [aws-cloudtrail](<https://devfeed.tech/tags/aws-cloudtrail.md>), [aws-security-token-service](<https://devfeed.tech/tags/aws-security-token-service.md>), [aws-sts](<https://devfeed.tech/tags/aws-sts.md>), [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [metrics](<https://devfeed.tech/tags/metrics.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [security](<https://devfeed.tech/tags/security.md>), [security-blog](<https://devfeed.tech/tags/security-blog.md>), [security-identity-compliance](<https://devfeed.tech/tags/security-identity-compliance.md>), [technical-how-to](<https://devfeed.tech/tags/technical-how-to.md>), [token](<https://devfeed.tech/tags/token.md>)

### AI overview

AWS Security Token Service has replaced its separate packed policy and overall session token limits with a single 4,096-byte limit. It now reports session token size and limit utilization in API responses, Amazon CloudWatch metrics, and AWS CloudTrail events.

### Source excerpt

AWS Security Token Service (AWS STS) has simplified session token size limits, giving you more room for your session policies and session tags. STS has replaced the packed policy size and the overall session token size limits with a single token size limit of 4,096 bytes. STS now reports session token size in API responses, [...]

## Resolve Amazon Aurora PostgreSQL lock contention with Database Insights: Part 2

DevFeed: [Resolve Amazon Aurora PostgreSQL lock contention with Database Insights: Part 2](<https://devfeed.tech/articles/resolve-amazon-aurora-postgresql-lock-contention-with-database-insights-part-2-20842.md>)

Original publisher: [Read original article](<https://aws.amazon.com/blogs/database/resolve-amazon-aurora-postgresql-lock-contention-with-database-insights-part-2/>)

Author: Sameer Kumar

Published: 2026-09-14T16:02:16Z

Content type: tutorial

Language: en

Sources: [AWS Database Blog](<https://devfeed.tech/sources/aws-database-blog.md>)

Topics: [Amazon Aurora](<https://devfeed.tech/topics/amazon-aurora.md>), [Amazon CloudWatch](<https://devfeed.tech/topics/amazon-cloudwatch.md>), [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>), [Concurrency](<https://devfeed.tech/topics/concurrency.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>), [Database](<https://devfeed.tech/topics/database.md>), [Amazon EC2](<https://devfeed.tech/topics/amazon-ec2.md>), [Architecture & Design](<https://devfeed.tech/topics/architecture-design.md>), [Amazon Web Services](<https://devfeed.tech/topics/aws.md>), [AWS CloudFormation](<https://devfeed.tech/topics/aws-cloudformation.md>)

Tags: [advanced-300](<https://devfeed.tech/tags/advanced-300.md>), [amazon-aurora](<https://devfeed.tech/tags/amazon-aurora.md>), [amazon-cloudwatch](<https://devfeed.tech/tags/amazon-cloudwatch.md>), [amazon-ec2](<https://devfeed.tech/tags/amazon-ec2.md>), [aws](<https://devfeed.tech/tags/aws.md>), [aws-cloudformation](<https://devfeed.tech/tags/aws-cloudformation.md>), [concurrency](<https://devfeed.tech/tags/concurrency.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [performance](<https://devfeed.tech/tags/performance.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [rds-for-postgresql](<https://devfeed.tech/tags/rds-for-postgresql.md>), [simulation](<https://devfeed.tech/tags/simulation.md>), [technical-how-to](<https://devfeed.tech/tags/technical-how-to.md>)

### AI overview

This tutorial explains how to diagnose and resolve lock contention in Amazon Aurora PostgreSQL using Amazon CloudWatch Database Insights. It demonstrates Lock Analysis and the Lock Tree visualization for identifying blocking sessions, then covers immediate fixes, configuration changes, optimistic concurrency control, asynchronous processing, SKIP LOCKED, and row splitting.

### Source excerpt

Part 1 showed how row lock contention degrades Amazon Aurora PostgreSQL throughput. In Part 2, use Amazon CloudWatch Database Insights and its Lock Tree to pinpoint blocking sessions, then resolve contention with query termination, timeout parameters, and architectural patterns such as SKIP LOCKED and row splitting that restore throughput.

## Troubleshooting row lock contention in Amazon Aurora PostgreSQL: Part 1 - Understanding row lock contention in PostgreSQL

DevFeed: [Troubleshooting row lock contention in Amazon Aurora PostgreSQL: Part 1 - Understanding row lock contention in PostgreSQL](<https://devfeed.tech/articles/troubleshooting-row-lock-contention-in-amazon-aurora-postgresql-part-1-understanding-row-lock-contention-in-postgresql-20843.md>)

Original publisher: [Read original article](<https://aws.amazon.com/blogs/database/troubleshooting-row-lock-contention-in-amazon-aurora-postgresql-part-1-understanding-row-lock-contention-in-postgresql/>)

Author: Sameer Kumar

Published: 2026-09-14T16:02:08Z

Content type: tutorial

Language: en

Sources: [AWS Database Blog](<https://devfeed.tech/sources/aws-database-blog.md>)

Topics: [Amazon Aurora](<https://devfeed.tech/topics/amazon-aurora.md>), [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>), [Concurrency](<https://devfeed.tech/topics/concurrency.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>), [Transactions](<https://devfeed.tech/topics/transactions.md>), [Amazon CloudWatch](<https://devfeed.tech/topics/amazon-cloudwatch.md>), [Amazon RDS](<https://devfeed.tech/topics/amazon-rds.md>), [Architecture & Design](<https://devfeed.tech/topics/architecture-design.md>), [Extension](<https://devfeed.tech/topics/extension.md>)

Tags: [advanced-300](<https://devfeed.tech/tags/advanced-300.md>), [amazon-aurora](<https://devfeed.tech/tags/amazon-aurora.md>), [amazon-cloudwatch](<https://devfeed.tech/tags/amazon-cloudwatch.md>), [amazon-rds](<https://devfeed.tech/tags/amazon-rds.md>), [architecture](<https://devfeed.tech/tags/architecture.md>), [availability](<https://devfeed.tech/tags/availability.md>), [concurrency](<https://devfeed.tech/tags/concurrency.md>), [database](<https://devfeed.tech/tags/database.md>), [database-performance](<https://devfeed.tech/tags/database-performance.md>), [extension](<https://devfeed.tech/tags/extension.md>), [locks](<https://devfeed.tech/tags/locks.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [production](<https://devfeed.tech/tags/production.md>), [rds-for-postgresql](<https://devfeed.tech/tags/rds-for-postgresql.md>), [technical-how-to](<https://devfeed.tech/tags/technical-how-to.md>), [transactions](<https://devfeed.tech/tags/transactions.md>), [troubleshooting](<https://devfeed.tech/tags/troubleshooting.md>)

### AI overview

This first part of a two-part series explains row lock contention in PostgreSQL and Amazon Aurora PostgreSQL. It covers how concurrent transactions competing for the same rows can reduce throughput and cause timeouts despite healthy CPU and I/O, then introduces PostgreSQL locking internals and monitoring techniques using system views, functions, the pgrowlocks extension, and log_lock_waits. The article notes that the same behavior and investigation approach apply to Amazon RDS for PostgreSQL.

### Source excerpt

Row lock contention can collapse database throughput during a flash sale even when CPU and I/O look healthy. In Part 1 of this series, learn how PostgreSQL row locking works and how to monitor lock contention in Amazon Aurora PostgreSQL and Amazon RDS for PostgreSQL using system views, the pgrowlocks extension, and the log_lock_waits parameter.

## Burst to Region: Overflow AWS Outposts workloads to Amazon EC2

DevFeed: [Burst to Region: Overflow AWS Outposts workloads to Amazon EC2](<https://devfeed.tech/articles/burst-to-region-overflow-aws-outposts-workloads-to-amazon-ec2-4659.md>)

Original publisher: [Read original article](<https://aws.amazon.com/blogs/compute/burst-to-region-overflow-aws-outposts-workloads-to-amazon-ec2/>)

Author: Diya

Published: 2026-08-12T17:06:54Z

Content type: tutorial

Language: en

Sources: [AWS Compute Blog](<https://devfeed.tech/sources/aws-compute-blog.md>)

Topics: [Amazon EC2](<https://devfeed.tech/topics/amazon-ec2.md>), [Amazon Web Services](<https://devfeed.tech/topics/aws.md>), [datacenter](<https://devfeed.tech/topics/datacenter.md>), [Latency](<https://devfeed.tech/topics/latency.md>), [Availability](<https://devfeed.tech/topics/availability.md>), [Amazon CloudWatch](<https://devfeed.tech/topics/amazon-cloudwatch.md>), [AWS Lambda](<https://devfeed.tech/topics/aws-lambda.md>), [Cloud](<https://devfeed.tech/topics/cloud.md>)

Tags: [advanced-300](<https://devfeed.tech/tags/advanced-300.md>), [amazon-cloudwatch](<https://devfeed.tech/tags/amazon-cloudwatch.md>), [amazon-ec2](<https://devfeed.tech/tags/amazon-ec2.md>), [api](<https://devfeed.tech/tags/api.md>), [applications](<https://devfeed.tech/tags/applications.md>), [availability](<https://devfeed.tech/tags/availability.md>), [aws](<https://devfeed.tech/tags/aws.md>), [aws-lambda](<https://devfeed.tech/tags/aws-lambda.md>), [aws-outposts](<https://devfeed.tech/tags/aws-outposts.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [compute](<https://devfeed.tech/tags/compute.md>), [data-center](<https://devfeed.tech/tags/data-center.md>), [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [latency](<https://devfeed.tech/tags/latency.md>), [technical-how-to](<https://devfeed.tech/tags/technical-how-to.md>)

### AI overview

This tutorial presents a Burst to Region pattern for AWS Outposts workloads. When an Outposts rack reaches its fixed compute capacity, the pattern launches Amazon EC2 instances in the parent AWS Region, shifts traffic gradually, and returns traffic to local instances when capacity recovers. It uses CloudWatch, SNS, Lambda, EC2 Auto Scaling, Elastic Load Balancing, and EventBridge, trading increased latency for continued availability during capacity events.

### Source excerpt

AWS Outposts brings AWS infrastructure into your data center with low latency and data locality. But an Outposts rack has fixed compute. Learn how to build a Burst to Region pattern that overflows workloads to Amazon EC2 in the parent Region when local capacity is exhausted.

## Centralize cross-account Amazon ECS telemetry with an ADOT gateway

DevFeed: [Centralize cross-account Amazon ECS telemetry with an ADOT gateway](<https://devfeed.tech/articles/centralize-cross-account-amazon-ecs-telemetry-with-an-adot-gateway-4626.md>)

Original publisher: [Read original article](<https://aws.amazon.com/blogs/containers/centralize-cross-account-amazon-ecs-telemetry-with-an-adot-gateway/>)

Author: Rahul Kumar

Published: 2026-08-06T16:13:46Z

Content type: tutorial

Language: en

Sources: [Containers](<https://devfeed.tech/sources/containers.md>)

Topics: [Amazon Elastic Container Service](<https://devfeed.tech/topics/amazon-elastic-container-service.md>), [telemetry](<https://devfeed.tech/topics/telemetry.md>), [OpenTelemetry](<https://devfeed.tech/topics/opentelemetry.md>), [SIEM, Security, Observability](<https://devfeed.tech/topics/siem-security-observability.md>), [Amazon CloudWatch](<https://devfeed.tech/topics/amazon-cloudwatch.md>), [Amazon Web Services](<https://devfeed.tech/topics/aws.md>), [Windows](<https://devfeed.tech/topics/windows.md>), [.NET Framework](<https://devfeed.tech/topics/net-framework.md>), [Traces](<https://devfeed.tech/topics/traces.md>), [log management](<https://devfeed.tech/topics/log-management.md>), [Amazon Elastic Kubernetes Service](<https://devfeed.tech/topics/amazon-elastic-kubernetes-service.md>)

Tags: [amazon-cloudwatch](<https://devfeed.tech/tags/amazon-cloudwatch.md>), [amazon-eks](<https://devfeed.tech/tags/amazon-eks.md>), [amazon-elastic-container-service](<https://devfeed.tech/tags/amazon-elastic-container-service.md>), [amazon-elastic-kubernetes-service](<https://devfeed.tech/tags/amazon-elastic-kubernetes-service.md>), [aws](<https://devfeed.tech/tags/aws.md>), [intermediate-200](<https://devfeed.tech/tags/intermediate-200.md>), [logs](<https://devfeed.tech/tags/logs.md>), [metrics](<https://devfeed.tech/tags/metrics.md>), [net-framework](<https://devfeed.tech/tags/net-framework.md>), [observability](<https://devfeed.tech/tags/observability.md>), [opentelemetry](<https://devfeed.tech/tags/opentelemetry.md>), [technical-how-to](<https://devfeed.tech/tags/technical-how-to.md>), [telemetry](<https://devfeed.tech/tags/telemetry.md>), [traces](<https://devfeed.tech/tags/traces.md>), [windows](<https://devfeed.tech/tags/windows.md>)

### AI overview

This tutorial presents a centralized AWS Distro for OpenTelemetry gateway for collecting telemetry from Amazon ECS workloads across multiple AWS accounts. It replaces per-task sidecars, supports Windows .NET Framework tasks, receives OTLP over private connectivity, and exports traces to AWS X-Ray plus metrics and logs to Amazon CloudWatch.

### Source excerpt

Running an OpenTelemetry collector as a sidecar in every Amazon ECS task does not scale across a multi-account estate, and it cannot run at all on Windows. Learn how to replace per-task sidecars with a single centralized ADOT gateway that ingests OTLP from workloads across accounts and exports traces to AWS X-Ray and metrics and logs to Amazon CloudWatch.

## New: Enhanced AssetState dimension for AWS Outposts capacity metrics on Amazon CloudWatch

DevFeed: [New: Enhanced AssetState dimension for AWS Outposts capacity metrics on Amazon CloudWatch](<https://devfeed.tech/articles/new-enhanced-assetstate-dimension-for-aws-outposts-capacity-metrics-on-amazon-cloudwatch-4669.md>)

Original publisher: [Read original article](<https://aws.amazon.com/blogs/compute/new-enhanced-assetstate-dimension-for-aws-outposts-capacity-metrics-on-amazon-cloudwatch/>)

Author: Rachel McElwaine

Published: 2026-07-15T22:52:23Z

Content type: release

Language: en

Sources: [AWS Compute Blog](<https://devfeed.tech/sources/aws-compute-blog.md>)

Topics: [AWS Outposts](<https://devfeed.tech/topics/aws-outposts.md>), [Amazon CloudWatch](<https://devfeed.tech/topics/amazon-cloudwatch.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [observability](<https://devfeed.tech/topics/observability.md>), [real-time](<https://devfeed.tech/topics/real-time.md>)

Tags: [amazon-cloudwatch](<https://devfeed.tech/tags/amazon-cloudwatch.md>), [aws](<https://devfeed.tech/tags/aws.md>), [aws-outposts](<https://devfeed.tech/tags/aws-outposts.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [integration](<https://devfeed.tech/tags/integration.md>), [metrics](<https://devfeed.tech/tags/metrics.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [production](<https://devfeed.tech/tags/production.md>), [real-time](<https://devfeed.tech/tags/real-time.md>), [remote](<https://devfeed.tech/tags/remote.md>)

### AI overview

AWS Outposts capacity metrics in Amazon CloudWatch now support an AssetState dimension with Active, Isolated, and Retiring values, enabling more accurate capacity monitoring and alarms.

### Source excerpt

Today, we are releasing an expanded format of our Amazon CloudWatch dimensions for AWS Outposts capacity metrics. The existing CloudWatch metrics, AvailableInstanceType_Count, UsedInstanceType_Count, InstanceTypeCapacityAvailability, and InstanceTypeCapacityUtilization for Outposts, can now be grouped using the new AssetState dimension with values: Active, Isolated, or Retiring. In this post, we describe what's changing and how you can use [...]