Web Session Replay Resource Versioning

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Solution Overview

Problem

Existing session recording systems for web-based applications face challenges in ensuring that resource files used during user interactions are accessible and accurate during replay, particularly when resources are behind login walls or subject to version changes due to continuous development, leading to incomplete or inaccurate replay of user experiences.

Innovation Solution

A monitoring system that captures resource content identifiers and annotates content documents, storing them on a monitoring server for later replay, ensuring that the same versions of resource files used during the session are accessed during replay, and employs probabilistic methods to minimize redundant resource capturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If session recording systems capture all resource files during user interactions, then the accuracy of replay is improved, but the system complexity and storage requirements increase

Engineering Contradiction:
Improvereplay accuracyVSAvoidsystem complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts only the essential resource content identifiers (hash values) from the actual resource files during session recording. Instead of capturing complete resource files, the system captures compact identifiers that can later be used to retrieve or reconstruct the necessary resources during replay, significantly reducing storage requirements while maintaining replay accuracy.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system performs preliminary hashing of resource content during the session recording phase to generate content identifiers. These pre-computed identifiers are stored alongside session data, enabling efficient resource retrieval during replay without requiring re-hashing or complete resource storage, thus simplifying the replay process.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the system captures resource content identifiers for every session, then resource version accuracy is improved, but the amount of data to be stored and processed increases

Engineering Contradiction:
Improveresource version accuracyVSAvoiddata volume
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

Instead of storing complete resource files, the system creates compact copies in the form of hash values (content identifiers). These hash copies serve as unique fingerprints of the resource content, enabling verification of resource versions without occupying significant storage space, thus maintaining reliability with minimal data volume.

Inventive Principle:
Principle #26Copying

3Loss of information

If the monitoring system stores complete resource files for replay, then replay completeness is improved, but the storage space and processing overhead increase

Engineering Contradiction:
Improvereplay completenessVSAvoidstorage space
Core Design Contradiction:
Loss of informationVSVolume of stationary object

Solution Approach 1:

The system extracts only the essential identifying characteristics of resource files (their content hashes) rather than storing the complete files. This extraction approach maintains the ability to verify and retrieve resources during replay while dramatically reducing the storage volume required for maintaining replay completeness.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS20250112976A1Method And System For Application Performance Neutral, Network Bandwidth Optimized Capturing Of Resources Used During The Interaction Of User With A Web-Based Application To Create Monitoring Data For An Accurate Visual Reconstruction Of The User Experience
Publication Date: 2025.04.03 DYNATRACE LLC
  • US20250112976A1 patent drawing
  • US20250112976A1 patent drawing
  • US20250112976A1 patent drawing

AI summary

A technology is disclosed for the browser side capturing of user interaction session data and replay of the session data for a high-fidelity reconstruction of the experience the user perceived. In addition to capturing central structuring and markup documents and browser side updates thereof, additional resource documents that are loaded and used by the browser to render the central documents are captured and added to the session recording data. Identification information is created for resource documents, based on the content of those documents, which allows the capturing system to distinguish different versions of those content documents that share the same name but have different content. The captured session data contains data to identify the correct versions of resource documents during replay. Various measures to reduce the amount of transferred resource content data are applied, that consider already captured resource document versions or the usage frequency of a monitored application.