BatchConstants.java

/**
 * Copyright (c) 2011-2012 Optimax Software Ltd.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
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 *    of its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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package com.elasticinbox.core.cassandra.utils;

/**
 * Constants for batch operations.
 * 
 * @author Rustam Aliyev
 */
public class BatchConstants
{
	/** Maximum number of columns to read at once */
	public final static int BATCH_READS = 250;

	/**
	 * Maximum number of columns to write within time interval. Used for rate
	 * limiting where RATE = WRITES / WRITES_INTERVAL
	 */
	public final static int BATCH_WRITES = 100;

	/**
	 * Time interval within which maximum number of batch writes should occur.
	 * In MILLISECONDS. Used for rate limiting where RATE = WRITES /
	 * WRITES_INTERVAL.
	 */
	public final static long BATCH_WRITE_INTERVAL = 100L;
}