Simple Yandex ClickHouse insert collector. It collect requests and send to ClickHouse servers.


Download binary for you platorm


Use docker image

or from sources (Go 1.8+):

git clone
cd clickhouse-bulk
go get
go build


  • Group n requests and send to any of ClickHouse server
  • Sending collected data by interval
  • Tested with VALUES, TabSeparated formats
  • Supports many servers to send
  • Supports query in query parameters and in body
  • Supports other query parameters like username, password, database
  • Supports basic authentication

For example:

INSERT INTO table3 (c1, c2, c3) VALUES ('v1', 'v2', 'v3')
INSERT INTO table3 (c1, c2, c3) VALUES ('v4', 'v5', 'v6')

sends as

INSERT INTO table3 (c1, c2, c3) VALUES ('v1', 'v2', 'v3')('v4', 'v5', 'v6')


  • -config - config file (json); default config.json

Configuration file

  "listen": ":8124", 
  "flush_count": 10000, // check by \n char
  "flush_interval": 1000, // milliseconds
  "debug": false, // log incoming requests
  "dump_dir": "dumps", // directory for dump unsended data (if clickhouse errors)
  "clickhouse": {
    "down_timeout": 300, // wait if server in down (seconds)
    "servers": [

Environment variables (used for docker image)

  • CLICKHOUSE_SERVERS - comma separated list of servers
  • CLICKHOUSE_FLUSH_COUNT - count of rows for insert
  • CLICKHOUSE_FLUSH_INTERVAL - insert interval


and send queries to :8124


For better performance words FORMAT and VALUES must be uppercase.