Reconnect when a redis command fails (#236)

Author: jonasfj

neat_cache/CHANGELOG.md

@@ -1,3 +1,6 @@
+## v2.0.4
+ * Reconnect when a redis command fails.
+
 ## v2.0.3
  * Added `topics` to `pubspec.yaml`.
 

neat_cache/lib/src/providers/redis.dart

@@ -131,7 +131,12 @@ class RedisCacheProvider extends CacheProvider<List<int>> {
     try {
       return await fn(ctx.client).timeout(_commandTimeLimit);
     } on RedisCommandException catch (e) {
-      throw AssertionError('error from redis command: $e');
+      // We don't really know what happened, let's log shout it.
+      // It could be a sign that something really bad is happening to redis.
+      // Best shutdown the connection and try again.
+      _log.shout('Error from redis command: $e');
+      await ctx.client.close(force: true);
+      throw IntermittentCacheException('error from redis command: $e');
     } on TimeoutException {
       // If we had a timeout, doing the command we forcibly disconnect
       // from the server, such that next retry will use a new connection.

neat_cache/pubspec.yaml

@@ -1,5 +1,5 @@
 name: neat_cache
-version: 2.0.3
+version: 2.0.4
 description: >-
   A neat cache abstraction for wrapping in-memory or redis caches.
 homepage: https://github.com/google/dart-neats/tree/master/neat_cache