Check Cache for Existing Data

src/Stores/LaravelCacheStore.php

@@ -32,6 +32,17 @@ public function get(string $key): ?string
      */
     public function set(string $key, string $value, int $ttl): bool
     {
-        return $this->store->put($key, $value, $ttl);
+        $result = $this->store->put($key, $value, $ttl);
+
+        // If the data already exists in the cache, then mysql returns 0 rows affected. Technically, this is not a
+        // failure. We should check for this before returning anything and return true if it does exist.
+        if ($result === false) {
+            $existingValue = $this->store->get($key);
+            if ($existingValue === $value) {
+                return true;
+            }
+        }
+
+        return $result;
     }
 }

tests/Laravel/Feature/LaravelStoreTest.php

@@ -4,6 +4,7 @@
 
 use Saloon\RateLimitPlugin\Limit;
 use Illuminate\Support\Facades\Cache;
+use Illuminate\Contracts\Cache\Repository;
 use Saloon\RateLimitPlugin\Stores\LaravelCacheStore;
 
 test('it records and can check exceeded limits', function () {
@@ -37,3 +38,17 @@
         'hits' => 1,
     ]));
 });
+
+test('it handles MySQL upsert behavior returning false for identical data', function () {
+    $mockCache = Mockery::mock(Repository::class);
+
+    $key = 'test:limit';
+    $value = json_encode(['timestamp' => time() + 60, 'hits' => 1]);
+
+    $mockCache->shouldReceive('put')->with($key, $value, Mockery::any())->andReturn(false);
+    $mockCache->shouldReceive('get')->with($key)->andReturn($value);
+
+    $store = new LaravelCacheStore($mockCache);
+
+    expect($store->set($key, $value, 60))->toBeTrue();
+});