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    • 4. 发明申请
    • System and Method for Efficient Storage of Long-Lived Session State in a SIP Server
    • 在SIP服务器中高效存储长时间会话状态的系统和方法
    • US20090006598A1
    • 2009-01-01
    • US11956110
    • 2007-12-13
    • Ioannis CosmadopoulosVinod MehraPaul James DevineReto Kramer
    • Ioannis CosmadopoulosVinod MehraPaul James DevineReto Kramer
    • G06F15/173G06F17/30
    • G06F17/30899H04L67/14
    • A SIP server can be deployed in a two-tier architecture, including an engine tier for processing of SIP communications and a state tier for maintaining the state associated with these communications. The state tier can include RAM-based replicas that provide data to the engines. Some of the SIP session state can be moved to the database in order to reduce the memory requirements of the state tier. Upon determining that a transaction boundary has been reached where the session state is steady, the state replica can save the data to the database. A hint can be received from the engine tier by the state replica indicating that the state data is ready to be saved. Subsequently, the data can be removed from the state tier by nulling out the bytes of actual data, while preserving the primary key, locking and timer information so as not to impact latency.
    • SIP服务器可以部署在双层架构中,包括用于处理SIP通信的引擎层和用于维护与这些通信相关联的状态的状态层。 状态层可以包括向引擎提供数据的基于RAM的副本。 一些SIP会话状态可以移动到数据库,以减少状态层的内存需求。 一旦确定已经到达会话状态稳定的事务边界,状态副本可以将数据保存到数据库。 可以通过状态副本从引擎层接收到提示,指示状态数据已准备好被保存。 随后,可以通过舍弃实际数据的字节,同时保留主键,锁定和定时器信息,从而不影响延迟,从状态层中删除数据。
    • 5. 发明授权
    • System and method for efficient storage of long-lived session state in a SIP server
    • 在SIP服务器中高效存储长时间会话状态的系统和方法
    • US08078737B2
    • 2011-12-13
    • US11956110
    • 2007-12-13
    • Ioannis CosmadopoulosVinod MehraPaul James DevineReto Kramer
    • Ioannis CosmadopoulosVinod MehraPaul James DevineReto Kramer
    • G06F7/00G06F15/16
    • G06F17/30899H04L67/14
    • A SIP server can be deployed in a two-tier architecture, including an engine tier for processing of SIP communications and a state tier for maintaining the state associated with these communications. The state tier can include RAM-based replicas that provide data to the engines. Some of the SIP session state can be moved to the database in order to reduce the memory requirements of the state tier. Upon determining that a transaction boundary has been reached where the session state is steady, the state replica can save the data to the database. A hint can be received from the engine tier by the state replica indicating that the state data is ready to be saved. Subsequently, the data can be removed from the state tier by nulling out the bytes of actual data, while preserving the primary key, locking and timer information so as not to impact latency.
    • SIP服务器可以部署在双层架构中,包括用于处理SIP通信的引擎层和用于维护与这些通信相关联的状态的状态层。 状态层可以包括向引擎提供数据的基于RAM的副本。 一些SIP会话状态可以移动到数据库,以减少状态层的内存需求。 一旦确定已经到达会话状态稳定的事务边界,状态副本可以将数据保存到数据库。 可以通过状态副本从引擎层接收到提示,指示状态数据已准备好被保存。 随后,可以通过舍弃实际数据的字节,同时保留主键,锁定和定时器信息,从而不影响延迟,从状态层中删除数据。