Sequence

As explained in Learn Docker in a Month of Lunches, Second Edition

A time series is an ordered sequence of values recorded with timestamps.

A time series is a set of metric values, each recorded with a timestamp. Prometheus can graph these values to show how a metric changes over time. section 9.3

Labels let you filter or aggregate metrics across containers. A simple PromQL query can sum matching values while ignoring selected labels. section 9.3

Aggregate request metrics

The query `sum(access_log_total) without(hostname, instance)` combines access-log counts across hosts and instances. section 9.3

Figure 9.9 Aggregating a metric to sum values from all containers and showing a graph of the results

See an aggregated metric displayed as a graph over time. section 9.3

How Learn Docker in a Month of Lunches, Second Edition covers it

How deep it goes

Defines timestamped metrics and demonstrates graphing and aggregation, without developing time-series theory.

Examples

Shows a graph of aggregated access-log counts and a query that sums values across hosts and instances.

What you can do after

Apply it via PromQL to aggregate labeled metrics and graph changes over time.

How it connects

Connects time series to Prometheus labels, PromQL aggregation, and Grafana dashboards.

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Also explained in

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  Clojure: The Essential ReferenceA sequential collection is a collection abstraction whose elements can be traversed in a defined sequential order.
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  Build a Text-to-Image Generator (from Scratch)Sequential data is data whose elements have an order that carries information about their meaning or interpretation.
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  Deep Learning with R, Third EditionTime series data consists of observations ordered by time, often recorded at regular intervals and exhibiting temporal dynamics such as trends, cycles, regimes, and spikes.
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  Investing for ProgrammersTime series data is a sequence of observations indexed by their times of occurrence.
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  Deep Learning with PyTorch, Second EditionA dataset whose observations are ordered successive timepoints.
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  Kotlin in Action, 2EA sequence is an ordered computation that produces elements, potentially lazily and without requiring all elements to be stored or computed immediately.
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  F# in Action: A Revised Edition of Get Programming with F#A sequence is an ordered, potentially lazy and forward-only series of elements, represented in .NET by the IEnumerable interface.
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  Build Python Web Apps with StreamlitA time series is an ordered sequence of observations associated with time points, such as dates and corresponding values.
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  Learn Haskell by ExampleSequence is a book-defined composition structure that represents musical elements arranged in succession.
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  Just Use Postgres!Time-series data consists of observations associated with timestamps or time intervals, often representing measurements or events over time.
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  Cloud Observability in ActionA time series is an ordered sequence of values associated with successive timestamps and a particular metric and dimension set.
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  Fabulous Adventures in Data Structures and AlgorithmsA sequence is an ordered abstraction representing elements that can be processed in a defined order.
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  Data Without LabelsA sequence is an ordered collection of events, where the order represents their relative occurrence positions.
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  PostgreSQL Mistakes and How to Avoid ThemTime-series data consists of observations associated with timestamps or other ordered points in time.
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  Machine Learning System DesignData consisting of observations indexed or ordered by time.
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  LLMs in ProductionSequence data is data whose elements have an ordered position that carries information.
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  Natural Language Processing in Action, Second EditionA time series is a sequence of observations indexed by successive points in time.
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  Everyday Data VisualizationData whose values have a meaningful order that should generally be preserved when displayed.
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  Deep Learning with Python, Third EditionAn ordered sequence of integer values used here to represent tokenized text.
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  Time Series Forecasting Using Foundation ModelsTime-series data are observations indexed by time, often representing measurements collected sequentially.
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  Digital Twins in ActionTime-series data is a sequence of observations indexed by time, often representing sensor measurements or other changing quantities.

Compare how 22 books explain sequence →

Related concepts

• recurrent neural networkused by · A recurrent neural network is a neural network that processes sequences by updating an internal state across successive inputs, allowing earlier inputs to influence later computations.
• abstract data typekind of · An abstract data type specifies values, operations, and behavior independently of a particular representation or implementation.
• asof joinused by · An ASOF join matches rows from two relations according to temporal validity or another inequality condition.
• melodyincludes · A melody is a sequence of pitched musical notes forming a recognizable musical line.
• stringincludes · A string is a programming-language value representing an ordered sequence of characters or character units as text.
• flatmapproduced by · FlatMap is an operation that applies a function producing nested collections or computational contexts to each element and combines the resulting contexts into one flattened result.

This explainer was generated by Manning's knowledge graph from the text of Learn Docker in a Month of Lunches, Second Edition. The section links point to the parts of the book it draws on.