acl/lib_acl_cpp/include/acl_cpp/session/session.hpp

#pragma once
#include "acl_cpp/acl_cpp_define.hpp"
#include <map>
#include "acl_cpp/stdlib/dbuf_pool.hpp"
#include "acl_cpp/stdlib/string.hpp"

namespace acl {

// <20><><EFBFBD><EFBFBD><EFBFBD>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD>ֵ<EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>壬<EFBFBD><E5A3AC><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>Ϊ<EFBFBD>˼<EFBFBD><CBBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
// <20><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD>ζ<EFBFBD><CEB6><EFBFBD><EFBFBD>ӵĽṹ<C4BD><E1B9B9><EFBFBD><EFBFBD>
typedef enum
{
	TODO_NUL,
	TODO_SET,
	TODO_DEL
} todo_t;

class ACL_CPP_API session_string : public string
{
public:
	session_string(size_t n = 64) : string(n), todo_(TODO_NUL) {}
	session_string(const session_string& ss)
		: string(ss)
	{
		todo_ = ss.todo_;
	}
	session_string(const string& s) : string(s), todo_(TODO_NUL) {}
	session_string(const char* s) : string(s), todo_(TODO_NUL) {}
	~session_string() {}
	todo_t todo_;
};

/**
 * session <EFBFBD>࣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD> memcached <EFBFBD>洢 session <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
class ACL_CPP_API session : public dbuf_obj
{
public:
	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>캯<EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><EFBFBD><EFBFBD> sid <EFBFBD>ǿ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ø<EFBFBD>
	 * sid<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD> sid<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>Ӧ<EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD> get_sid()
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD> sid <EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD>β<EFBFBD>ѯ<EFBFBD><EFBFBD> sid <EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param ttl {time_t} ָ<EFBFBD><EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>)
	 * @param sid {const char*} <EFBFBD>ǿ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> session <EFBFBD><EFBFBD> sid ʹ
	 *  <EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session sid<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 *  sid <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> get_sid() <EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD>ʹ<EFBFBD>ù<EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><EFBFBD>û<EFBFBD>
	 *  Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD> set_sid() <EFBFBD>޸ı<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session sid<EFBFBD><EFBFBD>
	 *  <EFBFBD><EFBFBD><EFBFBD>⣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> sid Ϊ<EFBFBD>գ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD> sid <EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD>
	 *  <EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><EFBFBD><EFBFBD> set_sid()
	 */
	session(time_t ttl = 0, const char* sid = NULL);
	virtual ~session(void);
	
	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	void reset(void);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ψһ ID <EFBFBD><EFBFBD>ʶ
	 * @return {const char*} <EFBFBD>ǿ<EFBFBD>
	 */
	virtual const char* get_sid(void) const
	{
		return sid_.c_str();
	}

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ψһ ID <EFBFBD><EFBFBD>ʶ
	 * @param sid {const char*} <EFBFBD>ǿ<EFBFBD>
	 * ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>󣬻<EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֮ǰ<EFBFBD><EFBFBD><EFBFBD>м仺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	void set_sid(const char* sid);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD> set/set_ttl ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> delay Ϊ true<EFBFBD><EFBFBD>
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>и<EFBFBD><EFBFBD><EFBFBD>
	 * @return {bool} <EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>ɹ<EFBFBD>
	 */
	virtual bool flush();

	/**
	 * <EFBFBD><EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>µ<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD>ͬʱ<EFBFBD><EFBFBD><EFBFBD>ø<EFBFBD>
	 * session <EFBFBD>Ĺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>)
	 * @param name {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @param value {const char*} session ֵ<EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @return {bool} <EFBFBD><EFBFBD><EFBFBD><EFBFBD> false <EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	virtual bool set(const char* name, const char* value);

	/**
	 * <EFBFBD><EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>µ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ø<EFBFBD> session <EFBFBD>Ĺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>)<EFBFBD><EFBFBD>
	 * @param name {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @param value {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @param len {size_t} value ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {bool} <EFBFBD><EFBFBD><EFBFBD><EFBFBD> false <EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	virtual bool set(const char* name, const void* value, size_t len);

	/**
	 * <EFBFBD>ӳ<EFBFBD><EFBFBD><EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>µ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ø<EFBFBD> session <EFBFBD>Ĺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>)<EFBFBD><EFBFBD>
	 * <EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session::flush <EFBFBD><EFBFBD><EFBFBD>ٽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD><EFBFBD>£<EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><EFBFBD>
	 * @param name {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @param value {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @param len {size_t} value ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {bool} <EFBFBD><EFBFBD><EFBFBD><EFBFBD> false <EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	virtual bool set_delay(const char* name, const void* value, size_t len);
	
	/**
	 * <EFBFBD><EFBFBD> session <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
	 * @param name {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @return {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD>Զ<EFBFBD>ǿգ<EFBFBD><EFBFBD>û<EFBFBD>
	 *  <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD>жϷ<EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>ǿմ<EFBFBD>(<EFBFBD><EFBFBD>: "\0")<EFBFBD><EFBFBD><EFBFBD>жϳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>򲻴<EFBFBD><EFBFBD><EFBFBD>
	 *  ע<EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>طǿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̱<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˷<EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>´<EFBFBD>
	 *      <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD>ܻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	const char* get(const char* name);

	/**
	 * <EFBFBD><EFBFBD> session <EFBFBD><EFBFBD>ȡ<EFBFBD>ö<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
	 * @param name {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @return {const session_string*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؿ<EFBFBD>ʱ
	 *  <EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>򲻴<EFBFBD><EFBFBD><EFBFBD>
	 *  ע<EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>طǿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̱<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˷<EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>´<EFBFBD>
	 *      <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD>ܻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	virtual const session_string* get_buf(const char* name);

	/**
	 * <EFBFBD><EFBFBD> session <EFBFBD><EFBFBD>ɾ<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>еı<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><EFBFBD>
	 * ʱ<EFBFBD>Ὣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> memcached <EFBFBD><EFBFBD>ɾ<EFBFBD><EFBFBD>
	 * @param name {const char*} session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD>
	 * @return {bool} true <EFBFBD><EFBFBD>ʾ<EFBFBD>ɹ<EFBFBD>(<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)<EFBFBD><EFBFBD>false <EFBFBD><EFBFBD>ʾɾ<EFBFBD><EFBFBD>ʧ<EFBFBD><EFBFBD>
	 *  ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳٷ<EFBFBD>ʽɾ<EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳٷ<EFBFBD><EFBFBD>͸<EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD>
	 *  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session::flush <EFBFBD><EFBFBD><EFBFBD>ٽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD><EFBFBD>£<EFBFBD><EFBFBD><EFBFBD>
	 *  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ʣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD≯<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	virtual bool del_delay(const char* name);
	virtual bool del(const char* name);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session <EFBFBD>ڻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵĻ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>
	 * @param ttl {time_t} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>)
	 * @param delay {bool} <EFBFBD><EFBFBD>Ϊ true ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӳٷ<EFBFBD><EFBFBD>͸<EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD>
	 *  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session::flush <EFBFBD><EFBFBD><EFBFBD>ٽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD><EFBFBD>£<EFBFBD><EFBFBD><EFBFBD>
	 *  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ߴ<EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ʣ<EFBFBD><EFBFBD><EFBFBD>Ϊ false ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD≯<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {bool} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>ɹ<EFBFBD>
	 */
	bool set_ttl(time_t ttl, bool delay);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>м<EFBFBD>¼<EFBFBD><EFBFBD> session <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD>п<EFBFBD><EFBFBD><EFBFBD>
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>洢<EFBFBD>ڻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>䲻һ<EFBFBD>£<EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD>
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> session <EFBFBD>ڻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {time_t}
	 */
	time_t get_ttl(void) const
	{
		return ttl_;
	}

	/**
	 * ʹ session <EFBFBD>ӷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ session ʧЧ
	 * @return {bool} <EFBFBD>Ƿ<EFBFBD>ʹ session ʧЧ
	 */
	virtual bool remove(void) = 0;

	/**
	 * <EFBFBD>Ӻ<EFBFBD><EFBFBD>˻<EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><EFBFBD>ö<EFBFBD>Ӧ sid <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD>󼯺<EFBFBD>
	 * @param attrs {std::map<string, session_string>&}
	 * @return {bool}
	 */
	virtual bool get_attrs(std::map<string, session_string>& attrs) = 0;

	/**
	 * <EFBFBD>Ӻ<EFBFBD><EFBFBD>˻<EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><EFBFBD>ö<EFBFBD>Ӧ sid <EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><EFBFBD><EFBFBD>
	 * @param names {const std::vector<string>&} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param values {std::vector<session_string>&} <EFBFBD>洢<EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {bool} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>ɹ<EFBFBD>
	 */
	virtual bool get_attrs(const std::vector<string>& names,
		std::vector<session_string>& values);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˻<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ sid <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD>󼯺<EFBFBD>
	 * @param attrs {std::map<string, session_string>&}
	 * @return {bool}
	 */
	virtual bool set_attrs(const std::map<string, session_string>& attrs) = 0;

protected:
	// <20><><EFBFBD>ö<EFBFBD>Ӧ sid <20><><EFBFBD>ݵĹ<DDB5><C4B9><EFBFBD>ʱ<EFBFBD><CAB1>
	virtual bool set_timeout(time_t ttl) = 0;

protected:
	// <20><> session <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD>
	static void serialize(const std::map<string, session_string>& attrs,
		string& out);

	// <20><> session <20><><EFBFBD>ݷ<EFBFBD><DDB7><EFBFBD><EFBFBD>л<EFBFBD>
	static void deserialize(string& buf,
		std::map<string, session_string>& attrs);

	// <20><><EFBFBD><EFBFBD> session <20><><EFBFBD>Լ<EFBFBD><D4BC><EFBFBD>
	static void attrs_clear(std::map<string, session_string>& attrs);

protected:
	session_string sid_;
	time_t ttl_;

	// <20>ñ<EFBFBD><C3B1><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD> set_ttl <20><><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD><D0A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ʋ<EFBFBD><C6B2><EFBFBD> sid_ ֻ<><D6BB><EFBFBD>²<EFBFBD><C2B2><EFBFBD><EFBFBD><EFBFBD>
	// <20>һ<EFBFBD>û<EFBFBD><C3BB><EFBFBD>ں<EFBFBD><DABA><EFBFBD> cache <20><><EFBFBD><EFBFBD><EFBFBD>˴洢<CBB4><E6B4A2><EFBFBD><EFBFBD> set_ttl <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>º<EFBFBD><C2BA><EFBFBD>
	// <20><> cache <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	bool sid_saved_;
	bool dirty_;
	std::map<string, session_string> attrs_;
	std::map<string, session_string> attrs_cache_;
};

} // namespace acl