Dynamic Content Caching via Segmentation and Parameter Changes

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Solution Overview

Problem

Current dynamic content caching systems fail to effectively distinguish and manage static, pseudodynamic, and dynamic content, leading to inefficient content delivery and caching strategies.

Innovation Solution

A system that uses content distinguishing functionality to differentiate between static, pseudodynamic, and dynamic content by analyzing client attributes and response digests, determining caching states, and adjusting caching expiration times based on observed changes and client variability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If content is cached without distinguishing between static, pseudodynamic, and dynamic types, then cache hit rate improves, but content freshness deteriorates

Engineering Contradiction:
Improvecache hit rateVSAvoidcontent freshness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent segments content into three distinct categories: static content, pseudodynamic content, and dynamic content. Each category is managed with different caching strategies - static content receives aggressive caching with long expiration times, pseudodynamic content uses moderate caching with refresh mechanisms, and dynamic content uses minimal or no caching. This segmentation resolves the contradiction by allowing high cache hit rates for static content while ensuring freshness for dynamic content through differential caching policies.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic caching strategies that adapt to content characteristics. The system dynamically determines content type through observation and analysis, then dynamically adjusts caching parameters such as expiration times and refresh intervals. This dynamic approach allows the caching system to optimize for both hit rate and freshness based on the specific content being cached, rather than using a static one-size-fits-all approach.

Inventive Principle:
Principle #15Dynamics

2Reliability

If all non-static content is treated as dynamic, then content freshness is maintained, but cache efficiency deteriorates

Engineering Contradiction:
Improvecontent freshnessVSAvoidcache efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent divides non-static content into two subcategories: pseudodynamic content (content that appears dynamic but is actually static for most clients) and truly dynamic content. This segmentation allows pseudodynamic content to be cached efficiently with moderate expiration times, while truly dynamic content receives appropriate refresh handling. The result is improved cache efficiency compared to treating all non-static content as dynamic, while maintaining adequate freshness through the pseudodynamic detection mechanism.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system employs observation-based detection where the caching system autonomously monitors content responses to determine whether content is pseudodynamic or truly dynamic. By observing patterns in content delivery without requiring external input or manual configuration, the system self-identifies content types and applies appropriate caching strategies, improving efficiency while maintaining freshness.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If content caching is implemented without content type distinction, then implementation simplicity is maintained, but caching performance deteriorates

Engineering Contradiction:
Improveimplementation simplicityVSAvoidcaching performance
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The patent implements an automated content classification system that observes content delivery patterns and automatically determines whether content is static, pseudodynamic, or dynamic. This self-service approach eliminates the need for manual content classification or complex configuration, maintaining implementation simplicity while enabling sophisticated differential caching strategies that dramatically improve caching performance.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system changes caching parameters (expiration times, refresh intervals, cache validity) based on observed content characteristics. By dynamically adjusting these parameters according to whether content is static, pseudodynamic, or dynamic, the system achieves high caching performance without requiring complex manual configuration, as the parameters are automatically optimized based on observed behavior.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP2724243B1Dynamic content caching
Publication Date: 2020.08.12 IMPERVA INC
  • EP2724243B1 patent drawingFigure 1
  • EP2724243B1 patent drawingFigure 2A
  • EP2724243B1 patent drawingFigure 2B

AI summary

A system for caching content including a server supplying at least one of static and non-static content elements, content distinguishing functionality operative to categorize elements of the non-static content as being either dynamic content elements or pseudodynamic content elements, and caching functionality operative to cache the pseudodynamic content elements. The static content elements are content elements which are identified by at least one of the server and metadata associated with the content elements as being expected not to change, the non-static content elements are content elements which are not identified by the server and/or by metadata associated with the content elements as being static content elements, the pseudodynamic content elements are non-static content elements which, based on observation, are not expected to change, and the dynamic content elements are non-static content elements which are not pseudodynamic.