- Observability: other versions:
- What is Elastic Observability?
- What’s new in 8.12
- Get started
- Observability AI Assistant
- Application performance monitoring (APM)
- Self manage APM Server
- Data Model
- Features
- How-to guides
- OpenTelemetry integration
- Manage storage
- Configure
- Advanced setup
- Secure communication
- Monitor
- API
- Troubleshoot
- Upgrade
- Release notes
- Known issues
- Logs
- Infrastructure monitoring
- AWS monitoring
- Synthetic monitoring
- Get started
- Scripting browser monitors
- Configure lightweight monitors
- Manage monitors
- Work with params and secrets
- Analyze monitor data
- Monitor resources on private networks
- Use the CLI
- Configure projects
- Configure Synthetics settings
- Grant users access to secured resources
- Manage data retention
- Use Synthetics with traffic filters
- Migrate from the Elastic Synthetics integration
- Scale and architect a deployment
- Synthetics support matrix
- Synthetics Encryption and Security
- Troubleshooting
- Uptime monitoring
- Real user monitoring
- Universal Profiling
- Alerting
- Service-level objectives (SLOs)
- Cases
- CI/CD observability
- Troubleshooting
- Fields reference
- Tutorials
- Monitor Amazon Web Services (AWS) with Elastic Agent
- Monitor Amazon Web Services (AWS) with Beats
- Monitor Google Cloud Platform
- Monitor a Java application
- Monitor Kubernetes
- Monitor Microsoft Azure with Elastic Agent
- Monitor Microsoft Azure with the Azure Native ISV Service
- Monitor Microsoft Azure with Beats
IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
What happens when APM Server or Elasticsearch is down?
editWhat happens when APM Server or Elasticsearch is down?
editIf Elasticsearch is down
APM Server does not have an internal queue to buffer requests, but instead leverages an HTTP request timeout to act as back-pressure. If Elasticsearch goes down, the APM Server will eventually deny incoming requests. Both the APM Server and APM agent(s) will issue logs accordingly.
If APM Server is down
Some agents have internal queues or buffers that will temporarily store data if the APM Server goes down. As a general rule of thumb, queues fill up quickly. Assume data will be lost if APM Server goes down. Adjusting these queues/buffers can increase the agent’s overhead, so use caution when updating default values.
-
Go agent - Circular buffer with configurable size:
ELASTIC_APM_BUFFER_SIZE. -
Java agent - Internal buffer with configurable size:
max_queue_size. - Node.js agent - No internal queue. Data is lost.
- PHP agent - No internal queue. Data is lost.
- Python agent - Internal Transaction queue with configurable size and time between flushes.
-
Ruby agent - Internal queue with configurable size:
api_buffer_size. - RUM agent - No internal queue. Data is lost.
- .NET agent - No internal queue. Data is lost.
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