Gek/cache bot search page (#3530)

* feat: add general purpose key/val caching layer

* feat: cache bot/metadata response page for 10 seconds

core/cache/cache_test.go

@@ -0,0 +1,72 @@
+package cache
+
+import (
+	"strconv"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCache(t *testing.T) {
+	expiration := 5 * time.Second
+	globalCache := GetGlobalCache()
+	assert.NotNil(t, globalCache, "NewGlobalCache should return a non-nil instance")
+	assert.Equal(t, globalCache, GetGlobalCache(), "GetGlobalCache should return the created instance")
+
+	cacheName := "testCache"
+	globalCache.CreateCache(cacheName, expiration)
+
+	createdCache := globalCache.GetCache(cacheName)
+	assert.NotNil(t, createdCache, "GetCache should return a non-nil cache")
+
+	key := "testKey"
+	value := []byte("testValue")
+	createdCache.Set(key, value)
+
+	// Wait for cache to expire
+	time.Sleep(expiration + 1*time.Second)
+
+	// Verify that the cache has expired
+	ci := globalCache.GetCache(cacheName)
+	cachedValue := ci.GetValueForKey(key)
+	assert.Nil(t, cachedValue, "Cache should not contain the value after expiration")
+}
+
+func TestConcurrentAccess(t *testing.T) {
+	// Test concurrent access to the cache
+	globalCache := NewGlobalCache()
+	cacheName := "concurrentCache"
+	expiration := 5 * time.Second
+	globalCache.CreateCache(cacheName, expiration)
+
+	// Start multiple goroutines to access the cache concurrently
+	numGoroutines := 10
+	keyPrefix := "key"
+	valuePrefix := "value"
+
+	done := make(chan struct{})
+	for i := 0; i < numGoroutines; i++ {
+		go func(index int) {
+			defer func() { done <- struct{}{} }()
+
+			cache := globalCache.GetCache(cacheName)
+			key := keyPrefix + strconv.Itoa(index)
+			value := valuePrefix + strconv.Itoa(index)
+
+			cache.Set(key, []byte(value))
+
+			// Simulate some work
+			time.Sleep(100 * time.Millisecond)
+
+			ci := globalCache.GetCache(cacheName)
+			cachedValue := string(ci.GetValueForKey(key))
+			assert.Equal(t, value, cachedValue, "Cached value should match the set value")
+		}(i)
+	}
+
+	// Wait for all goroutines to finish
+	for i := 0; i < numGoroutines; i++ {
+		<-done
+	}
+}