using the cache lmao

cache.go

@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"sync"
+	"time"
 )
 
 // TextSearchResult represents a single search result item.
@@ -21,16 +22,24 @@ type CacheKey struct {
 	Lang  string
 }
 
-// ResultsCache is a thread-safe map for caching search results by composite keys.
-type ResultsCache struct {
-	mu      sync.Mutex
-	results map[string][]TextSearchResult
+// CachedItem represents an item stored in the cache with an expiration time.
+type CachedItem struct {
+	Results    []TextSearchResult
+	StoredTime time.Time
 }
 
-// NewResultsCache creates a new ResultsCache.
-func NewResultsCache() *ResultsCache {
+// ResultsCache is a thread-safe map for caching search results by composite keys.
+type ResultsCache struct {
+	mu         sync.Mutex
+	results    map[string]CachedItem
+	expiration time.Duration
+}
+
+// NewResultsCache creates a new ResultsCache with a specified expiration duration.
+func NewResultsCache(expiration time.Duration) *ResultsCache {
 	return &ResultsCache{
-		results: make(map[string][]TextSearchResult),
+		results:    make(map[string]CachedItem),
+		expiration: expiration,
 	}
 }
 
@@ -38,15 +47,29 @@ func NewResultsCache() *ResultsCache {
 func (rc *ResultsCache) Get(key CacheKey) ([]TextSearchResult, bool) {
 	rc.mu.Lock()
 	defer rc.mu.Unlock()
-	results, exists := rc.results[rc.keyToString(key)]
-	return results, exists
+
+	item, exists := rc.results[rc.keyToString(key)]
+	if !exists {
+		return nil, false
+	}
+
+	// Check if the item has expired
+	if time.Since(item.StoredTime) > rc.expiration {
+		delete(rc.results, rc.keyToString(key))
+		return nil, false
+	}
+
+	return item.Results, true
 }
 
 // Set stores the results for a given key in the cache.
 func (rc *ResultsCache) Set(key CacheKey, results []TextSearchResult) {
 	rc.mu.Lock()
 	defer rc.mu.Unlock()
-	rc.results[rc.keyToString(key)] = results
+	rc.results[rc.keyToString(key)] = CachedItem{
+		Results:    results,
+		StoredTime: time.Now(),
+	}
 }
 
 // keyToString converts a CacheKey to a string representation.