David Snelling
33afd715a0
- Added SearchCursor and PaginatedSearchResult interfaces for cursor-based pagination support. - Introduced SearchCache class to cache search results, improving performance. - Implemented tests for automatic cache configuration and performance improvements. - Enhanced existing tests to validate pagination and caching behavior.
257 lines
No EOL
7.9 KiB
TypeScript
257 lines
No EOL
7.9 KiB
TypeScript
/**
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* Tests for performance improvements: caching and cursor-based pagination
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*/
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import { describe, it, expect, beforeEach, afterEach } from 'vitest'
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import { BrainyData } from '../src/brainyData.js'
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import { cleanupWorkerPools } from '../src/utils/index.js'
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describe('Performance Improvements', () => {
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let db: BrainyData
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beforeEach(async () => {
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// Initialize BrainyData with caching enabled
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db = new BrainyData({
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storage: {
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forceMemoryStorage: true
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},
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searchCache: {
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enabled: true,
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maxSize: 50,
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maxAge: 60000 // 1 minute
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},
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logging: {
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verbose: false
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}
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})
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await db.init()
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})
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afterEach(async () => {
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await db.clear()
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await cleanupWorkerPools()
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})
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describe('Search Result Caching', () => {
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it('should cache search results transparently', async () => {
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// Add test data
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for (let i = 0; i < 10; i++) {
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await db.add({
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id: `item-${i}`,
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text: `test document ${i}`,
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value: i
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})
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}
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// Clear cache to start fresh
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db.clearCache()
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let stats = db.getCacheStats()
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expect(stats.search.hits).toBe(0)
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expect(stats.search.misses).toBe(0)
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// First search - should be cache miss
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const query = 'test document'
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const results1 = await db.search(query, 5)
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expect(results1.length).toBe(5)
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stats = db.getCacheStats()
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expect(stats.search.misses).toBe(1) // First search is a miss
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expect(stats.search.hits).toBe(0)
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// Second identical search - should be cache hit
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const results2 = await db.search(query, 5)
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expect(results2.length).toBe(5)
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expect(results2).toEqual(results1) // Same results
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stats = db.getCacheStats()
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expect(stats.search.misses).toBe(1) // Still only one miss
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expect(stats.search.hits).toBe(1) // Now we have a hit
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expect(stats.search.hitRate).toBe(0.5) // 50% hit rate
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})
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it('should invalidate cache when data changes', async () => {
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// Add test data
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for (let i = 0; i < 5; i++) {
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await db.add({
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id: `item-${i}`,
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text: `test document ${i}`
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})
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}
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// Search and cache results
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const results1 = await db.search('test document', 3)
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expect(results1.length).toBe(3)
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let stats = db.getCacheStats()
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const initialMisses = stats.search.misses
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// Same search should hit cache
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await db.search('test document', 3)
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stats = db.getCacheStats()
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expect(stats.search.hits).toBeGreaterThan(0)
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// Add new data - should invalidate cache
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await db.add({
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id: 'new-item',
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text: 'new test document'
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})
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// Same search should miss cache (due to invalidation)
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await db.search('test document', 3)
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stats = db.getCacheStats()
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// Cache was cleared, so we should have fewer misses recorded than expected
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// The key point is that cache size should be 0 or low, indicating invalidation worked
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expect(stats.search.size).toBeLessThanOrEqual(1) // Cache should have been cleared
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})
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it('should handle cache with different search parameters', async () => {
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// Add test data
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for (let i = 0; i < 10; i++) {
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await db.add({
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id: `item-${i}`,
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text: `test document ${i}`
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})
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}
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db.clearCache()
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// Different k values should create different cache entries
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await db.search('test document', 3)
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await db.search('test document', 5) // Different k
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await db.search('test document', 3) // Should hit cache
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const stats = db.getCacheStats()
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expect(stats.search.hits).toBe(1)
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expect(stats.search.misses).toBe(2)
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})
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})
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describe('Cursor-based Pagination', () => {
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beforeEach(async () => {
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// Add more test data for pagination
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for (let i = 0; i < 50; i++) {
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await db.add({
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id: `doc-${i.toString().padStart(2, '0')}`,
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text: `document content for testing pagination ${i}`,
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index: i
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})
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}
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})
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it('should return cursor for pagination', async () => {
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const page1 = await db.searchWithCursor('document content for testing', 10)
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expect(page1.results.length).toBe(10)
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expect(page1.hasMore).toBe(true)
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expect(page1.cursor).toBeDefined()
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expect(page1.cursor!.lastId).toBeDefined()
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expect(page1.cursor!.lastScore).toBeDefined()
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})
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it('should paginate consistently with cursor', async () => {
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const page1 = await db.searchWithCursor('document content for testing', 5)
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expect(page1.results.length).toBe(5)
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expect(page1.hasMore).toBe(true)
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// Get next page using cursor
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const page2 = await db.searchWithCursor('document content for testing', 5, {
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cursor: page1.cursor
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})
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expect(page2.results.length).toBe(5)
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// Ensure no overlap between pages
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const page1Ids = page1.results.map(r => r.id)
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const page2Ids = page2.results.map(r => r.id)
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const overlap = page1Ids.filter(id => page2Ids.includes(id))
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expect(overlap.length).toBe(0)
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})
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it('should handle last page correctly', async () => {
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// Get small pages to reach the end
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let currentCursor: any = undefined
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let allResults: any[] = []
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let pageCount = 0
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const maxPages = 10 // Safety limit
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while (pageCount < maxPages) {
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const page = await db.searchWithCursor('document content', 5, {
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cursor: currentCursor
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})
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allResults.push(...page.results)
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pageCount++
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if (!page.hasMore) {
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expect(page.cursor).toBeUndefined()
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break
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}
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currentCursor = page.cursor
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}
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expect(pageCount).toBeLessThan(maxPages) // Should have finished before limit
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expect(allResults.length).toBeGreaterThan(0)
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})
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it('should provide total estimate when possible', async () => {
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const page = await db.searchWithCursor('document content', 50) // Request more than we have
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// Should get all results in one page
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expect(page.results.length).toBeGreaterThan(0)
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expect(page.hasMore).toBe(false)
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expect(page.totalEstimate).toBeDefined()
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expect(page.totalEstimate).toBe(page.results.length)
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})
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})
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describe('Performance Characteristics', () => {
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it('should show performance improvement with caching', async () => {
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// Add substantial test data
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for (let i = 0; i < 50; i++) {
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await db.add({
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id: `perf-test-${i}`,
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text: `performance test document ${i} with some content`
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})
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}
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// Clear cache and perform first search
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db.clearCache()
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const results1 = await db.search('performance test document', 10)
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let stats = db.getCacheStats()
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expect(stats.search.misses).toBe(1) // First search is a miss
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expect(stats.search.hits).toBe(0)
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// Perform second identical search (should hit cache)
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const results2 = await db.search('performance test document', 10)
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expect(results1).toEqual(results2) // Same results
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stats = db.getCacheStats()
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expect(stats.search.hits).toBe(1) // Second search is a hit
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expect(stats.search.hitRate).toBe(0.5) // 50% hit rate (1 hit, 1 miss)
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})
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it('should provide cache memory usage information', async () => {
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// Add some data and search to populate cache
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for (let i = 0; i < 10; i++) {
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await db.add({
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id: `mem-test-${i}`,
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text: `memory test ${i}`
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})
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}
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db.clearCache()
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// Perform several searches to populate cache
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await db.search('memory test', 5)
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await db.search('memory test', 3)
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await db.search('test', 5)
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const stats = db.getCacheStats()
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expect(stats.searchMemoryUsage).toBeGreaterThan(0)
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expect(stats.search.size).toBeGreaterThan(0)
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expect(stats.search.size).toBeLessThanOrEqual(stats.search.maxSize)
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})
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})
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}) |