Use batch=ok query param for document PUT and POST to defer index updates until a threshold of documents (or amount of time) has been passed.

This option returns a 202 Accepted response instead of a 201 Created, so do not use it for applications which require all data to be saved safely to disk. It is ideal for applications like logging where losing some events in a crash will be ok.


git-svn-id: https://svn.apache.org/repos/asf/couchdb/trunk@771418 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 37 insertions, 0 deletions

diff --git a/src/couchdb/couch_batch_save_sup.erl b/src/couchdb/couch_batch_save_sup.erl
new file mode 100644
index 00000000..42cf1aba
--- /dev/null
+++ b/src/couchdb/couch_batch_save_sup.erl
@@ -0,0 +1,37 @@
+% 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.
+
+-module(couch_batch_save_sup).
+
+-behaviour(supervisor).
+
+-export([start_link/0,init/1]).
+
+start_link() ->
+    supervisor:start_link({local, couch_batch_save_sup},
+        couch_batch_save_sup, []).
+
+init([]) ->
+    Self = self(),
+    ok = couch_config:register(
+        fun("couchdb", _) ->
+            exit(Self, reload_config)
+        end),
+
+    BatchSize = list_to_integer(couch_config:get("couchdb", 
+        "batch_save_size","1000")),
+    BatchInterval = list_to_integer(couch_config:get("couchdb", 
+        "batch_save_interval","1000")),
+
+    Batch = {batch, {couch_batch_save, start_link, [BatchSize, BatchInterval]},
+            permanent, 1000, worker, [batch_save]},
+    {ok, {{one_for_one, 10, 3600}, [Batch]}}.