Add pushover notifications, this should be a super basic MVP

vendor/github.com/dgraph-io/badger/options/options.go

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017 Dgraph Labs, Inc. and Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package options
+
+// FileLoadingMode specifies how data in LSM table files and value log files should
+// be loaded.
+type FileLoadingMode int
+
+const (
+	// FileIO indicates that files must be loaded using standard I/O
+	FileIO FileLoadingMode = iota
+	// LoadToRAM indicates that file must be loaded into RAM
+	LoadToRAM
+	// MemoryMap indicates that that the file must be memory-mapped
+	MemoryMap
+)