Error Grouping and Deduplication Strategies

Why Error Grouping Matters

Without proper grouping, you'll be overwhelmed by duplicate errors. Effective grouping helps you focus on unique issues and their frequency.

Grouping Strategies

Different grouping strategies work for different types of errors:

Stack Trace Grouping

function groupByStackTrace(errors) {
    return errors.reduce((groups, error) => {
        const key = generateStackTraceHash(error.stack);
        if (!groups[key]) {
            groups[key] = [];
        }
        groups[key].push(error);
        return groups;
    }, {});
}

Group errors by their stack trace similarity. This is most effective for application errors:

Message-Based Grouping

For errors with similar messages but different stack traces, use message-based grouping:

Custom Grouping Rules

function customGrouping(error) {
    // Group by error type and affected component
    return `${error.type}-${error.component}-${error.severity}`;
}

Implement custom grouping rules for your specific application needs:

Deduplication Techniques

Prevent the same error from being reported multiple times:

Deduplication Methods

• Time-based deduplication (same error within X minutes)
• User-based deduplication (same error per user)
• Session-based deduplication (same error per session)
• Fingerprint-based deduplication (unique error signature)