fixed an issue where disabling the "RamCache" config would cause a crash

cache.go

@@ -123,6 +123,11 @@ func NewGeocodeCache() *GeocodeCache {
 
 // Get retrieves the results for a given key from the cache.
 func (rc *ResultsCache) Get(key CacheKey) ([]SearchResult, bool) {
+	// Skip if RAM caching is disabled
+	if !config.RamCacheEnabled {
+		return nil, false
+	}
+
 	rc.mu.Lock()
 	defer rc.mu.Unlock()
 
@@ -143,6 +148,11 @@ func (rc *ResultsCache) Get(key CacheKey) ([]SearchResult, bool) {
 
 // Set stores the results for a given key in the cache.
 func (rc *ResultsCache) Set(key CacheKey, results []SearchResult) {
+	// Skip if RAM caching is disabled
+	if !config.RamCacheEnabled {
+		return
+	}
+
 	rc.mu.Lock()
 	defer rc.mu.Unlock()
 
@@ -162,6 +172,11 @@ func (rc *ResultsCache) keyToString(key CacheKey) string {
 
 // checkAndCleanCache removes items if memory usage exceeds the limit.
 func (rc *ResultsCache) checkAndCleanCache() {
+	// Skip if RAM caching is disabled
+	if !config.RamCacheEnabled {
+		return
+	}
+
 	if rc.currentMemoryUsage() > config.RamCache.MaxUsageBytes {
 		rc.cleanOldestItems()
 	}
@@ -179,6 +194,11 @@ func (rc *ResultsCache) currentMemoryUsage() uint64 {
 
 // Get retrieves the geocoding result for a given query from the cache.
 func (gc *GeocodeCache) Get(query string) (latitude, longitude string, found bool, exists bool) {
+	// Skip if RAM caching is disabled
+	if !config.RamCacheEnabled {
+		return "", "", false, false
+	}
+
 	gc.mu.Lock()
 	defer gc.mu.Unlock()
 
@@ -198,6 +218,11 @@ func (gc *GeocodeCache) Get(query string) (latitude, longitude string, found boo
 }
 
 func (gc *GeocodeCache) Set(query, latitude, longitude string, found bool) {
+	// Skip if RAM caching is disabled
+	if !config.RamCacheEnabled {
+		return
+	}
+
 	gc.mu.Lock()
 	defer gc.mu.Unlock()