ES Optimization

bulk-indexing-optimization

# Optimization for re-indexing

These settings can be turned on/off to increase performance when doing re-indexing of existing large dataset

### Disable refresh while re-indexing `page 161`
You can turn off automatic refreshes while you are building a big new index, and then turn them back on when you start using the index in production:

Before re-indexing:

	POST /my_logs/_settings
	{ "refresh_interval": -1 }

After re-indexing:

	POST /my_logs/_settings
	{ "refresh_interval": "1s" }

### Merge `page 652`
- Disable merge

	PUT /_cluster/settings
	{
		"transient" : {
			"indices.store.throttle.type" : "none"
		} 
	}

search-optimization

# Optimization for search

### Merge `page 652`
- Increase merge throttle to 100MB for SSD
	PUT /_cluster/settings
	{
		"persistent" : {
			"indices.store.throttle.max_bytes_per_sec" : "100mb"
		} 
	}