Resource tag
A resource tag is metadata, commonly a key-value label, attached to a resource to identify, classify, organize, filter, or track it.
Infrastructure as Code, Patterns and Practices: With examples in Python and Terraform
Metadata attached to an infrastructure resource to identify, classify, or organize it according to attributes such as ownership or cost.
- How it is used
- Organizes infrastructure for consistency, access relationships, auditing, ownership, and cloud-cost review.
- How deep it goes
- Explains reusable tag modules, propagation, operational dependencies, and cautious cleanup, stopping short of a complete tagging standard.
- Examples
- Uses customer, automated, cost-center, business-unit, blue, and untagged-server examples.
- What you can do after
- Operate/configure shared infrastructure metadata, investigate untagged resources, and remove confirmed waste safely.
Quarkus in Action
A tag is a key-value label attached to a metric to identify a particular dimension of the measured data.
- How it is used
- Identifies dimensions of a metric so related measurements can be queried and aggregated by their tag values.
- How deep it goes
- Defines key-value dimensions, explains per-combination series and aggregation, and cautions against high-cardinality values.
- Examples
- Uses HTTP request method, path, and status tags, plus a counted-method series labeled with class, method, exception, and result.
- What you can do after
- Apply it via Micrometer `@Counted` and inspect the resulting dimensions at Quarkus’s `/q/metrics` endpoint.
Amazon Web Services in Action, Third Edition: An in-depth guide to AWS
An AWS tag is a key-value metadata label attached to a resource for identification, organization, or cost tracking.
- How it is used
- Organizes AWS resources for identification, filtering, ownership, cost attribution, and access control.
- How deep it goes
- Defines key-value tags and demonstrates organization, cost tracking, limits, and automated EC2 ownership tagging.
- Examples
- Uses owner tags for EC2 instances and system=wordpress tags for CloudFormation-managed application infrastructure.
- What you can do after
- Apply tags through CloudFormation and automate EC2 owner tagging with Lambda.
Learn Docker in a Month of Lunches, Second Edition
A metric label is a named metadata field attached to a metric value to distinguish dimensions of the measured data.
- How it is used
- Uses named metric labels to distinguish container-level measurements and inspect load distribution.
- How deep it goes
- Explains labels through a worked Prometheus workflow and aggregation query, without detailing label creation or storage internals.
- Examples
- Demonstrates hostname labels on three scaled containers and aggregates access_log_total while excluding hostname and instance.
- What you can do after
- Diagnose load distribution with labeled Prometheus metrics and aggregate values across containers.
Read how Learn Docker in a Month of Lunches, Second Edition explains resource tag →
Learn PowerShell Scripting in a Month of Lunches, Second Edition: Write and organize scripts and tools
A tag is a label attached to an informational message or software artifact for classification and filtering.
- How it is used
- Classifies informational output for selective display, capture, filtering, and module discovery.
- How deep it goes
- Demonstrates tag assignment, capture, object inspection, filtering, and manifest entry without developing a tagging taxonomy.
- Examples
- Uses Process, Meta, Data, status, and notice labels on captured PowerShell information records.
- What you can do after
- Apply it via Write-Information and module manifests to organize output or improve project discoverability.
Spring in Action, Sixth Edition
A tag is a named key-value dimension attached to a metric for classification and filtering.
- How it is used
- Uses named dimensions to classify and filter runtime and custom metrics.
- How deep it goes
- Explains tag discovery, single and combined filters, and custom counter creation without detailing metric storage internals.
- Examples
- Demonstrates status and URI filters for HTTP requests and ingredient filters for taco counters.
- What you can do after
- Apply tags via Actuator queries and register custom tagged counters with MeterRegistry.
Read how Spring in Action, Sixth Edition explains resource tag →
Related concepts
- AWS Lambdaproduced by · AWS Lambda is Amazon Web Services’ managed serverless computing service for running code in response to events or requests without managing servers.
- sequenceused by · A sequence is an ordered collection of elements whose positions determine their order of traversal or processing.
- semantic versioningconfigured by · Semantic Versioning is a version-numbering convention using MAJOR.MINOR.PATCH components to communicate compatibility impact: major for incompatible changes, minor for compatible additions, and patch for compatible fixes.
- performancepart of · Performance is the measurable effectiveness or operational behavior of a system under specified conditions, assessed through relevant qualities such as task results, speed, responsiveness, throughput, or resource use.
- AWSuses · Amazon Web Services (AWS) is Amazon's public cloud computing platform, providing on-demand infrastructure and managed services over the internet.
- testused by · A test is a procedure or check that evaluates behavior using specified inputs or evidence against expected results or criteria.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.