公开(公告)号：WO2023033719A2

公开(公告)日：2023-03-09

申请号：PCT/SG2022/050540

申请日：2022-07-29

Applicant: LEMON INC.

Inventor： CHEN, Jianjun ,  DING, Yonghua ,  LIU, Ye ,  LI, Fangshi ,  CAO, Lixun ,  LIU, Yang ,  ZHANG, Li ,  ZHANG, Mingyi ,  ZHANG, Lei ,  SHI, Rui

IPC: G06F16/27 ,  G06F16/28 ,  G06F16/22 ,  G06F16/901 ,  G06F16/23 ,  G06F16/2433 ,  G06F16/24575 ,  G06F16/258 ,  G06F16/278 ,  G06F16/283

Abstract: The present disclosure describes hybrid transactional and analytical processing (HTAP) techniques. A HTAP system comprises a first processing engine configured to perform online transactional processing, a second processing engine configured to perform online analytical processing, and a storage in communication with the first processing engine and the second processing engine. The first processing engine, the second processing engine, and the storage may be modularized and configured to be decoupled from each other. The system may be configured to capture data by the first processing engine in real time, organize the data in a first format in a first part of the storage for use by the first processing engine, propagate the data to a second part of the storage subsystem, and organize the data in a second format in the second part of the storage for use by the second processing engine.

公开(公告)号：WO2023033720A2

公开(公告)日：2023-03-09

申请号：PCT/SG2022/050549

申请日：2022-08-02

Applicant: LEMON INC.

Inventor： CHEN, Jianjun ,  DING, Yonghua ,  LIU, Ye ,  LI, Fangshi ,  CAO, Lixun ,  LIU, Yang ,  ZHANG, Li ,  ZHANG, Mingyi ,  MENG, Xiangrui ,  ZHAO, Junda ,  ZHANG, Lei ,  SHI, Rui

IPC: G06F16/23 ,  G06F16/27 ,  G06F16/28 ,  G06F16/22 ,  G06F16/901 ,  G06F16/2358 ,  G06F16/2365 ,  G06F16/278 ,  G06F16/283

Abstract: The present disclosure describes techniques of providing data consistency for hybrid transactional and analytical processing. Logical logs and log serial numbers (LSNs) associated with the logical logs may be generated based on data captured by a first processing engine. The logical logs and the LSNs may be propagated to a storage subsystem configured to be in communication with the first processing engine and a second processing engine. The LSNs and information indicative of LSN schema versions may be stored and distributed by a metadata service. The first processing engine, the second processing engine, the storage subsystem and the metadata service are modularized, and support a LSN mechanism for maintaining data consistency.

公开(公告)号：EP4530876A1

公开(公告)日：2025-04-02

申请号：EP24191018.1

申请日：2024-07-25

Applicant: Lemon Inc. ,  Beijing Volcano Engine Technology Co., Ltd.

Inventor： QIU, Sheng ,  WANG, Hao ,  YANG, Zhengyu ,  JIAO, Yizheng ,  HU, Jianyang ,  LIU, Yang ,  OU, Jiaxin ,  SUN, Huan ,  ZHANG, Yinlin

IPC: G06F16/18

Abstract: A file system (100) particular for use with key-value stores is provided. The file system (100) can operate in a user space instead of a kernel space. The file system (100) can be an append-only file system. The file system (100) can support use of solid state drives, SSDs, for storage, including zoned SSDs. The file system (100) can include a file manager, a metadata manager, a task scheduler, a space allocator, and a collaborator for collaborating with a key-value store.

公开(公告)号：EP4309050A2

公开(公告)日：2024-01-24

申请号：EP22865178.2

申请日：2022-07-29

Applicant: Lemon Inc.

Inventor： CHEN, Jianjun ,  DING, Yonghua ,  LIU, Ye ,  LI, Fangshi ,  CAO, Lixun ,  LIU, Yang ,  ZHANG, Li ,  ZHANG, Mingyi ,  ZHANG, Lei ,  SHI, Rui

IPC: G06F16/27 ,  G06F16/28 ,  G06F16/22 ,  G06F16/901 ,  G06F16/23

公开(公告)号：EP4280148A1

公开(公告)日：2023-11-22

申请号：EP23199881.6

申请日：2023-09-26

Applicant: Lemon Inc. ,  BEIJING YOUZHUJU NETWORK TECHNOLOGY CO. LTD.

Inventor： TON, Jean-Francois ,  KLOCHKOV, Yegor ,  LIU, Yang ,  LI, Hang

IPC: G06Q30/06 ,  G06Q30/0601

Abstract: A method of explaining why an item has been recommended to a user comprises determining a value for the preference of the user for the recommended item based on data relating to the user and the item. This may be in the form of an interaction score. The user data is then modified to reduce the determined preference value such that the recommended item would not be recommended to the user. The modified user data is then used to determine preference values for items with which the user has interacted. These will be different from previously determined preference values based on the unmodified user data. From these preference values it is then possible to identify one or more items with which the user has interacted, for which the determined preference values differ most from previously determined preference values. It can be concluded that the interaction of the user with these identified item(s) is the antecedent for the recommended item being recommended.

公开(公告)号：EP4530875A1

公开(公告)日：2025-04-02

申请号：EP24193077.5

申请日：2024-08-06

Applicant: Lemon Inc. ,  Beijing Volcano Engine Technology Co., Ltd.

Inventor： WANG, Hao ,  OU, Jiaxin ,  QIU, Sheng ,  WANG, Yi ,  YANG, Zhengyu ,  JIAO, Yizheng ,  ZHANG, Jingwei ,  HU, Jianyang ,  LIU, Yang ,  ZHAO, Ming ,  ZHANG, Hui ,  GUO, Kuankuan ,  SUN, Huan ,  ZHANG, Yinlin

IPC: G06F16/13 ,  G06F16/18

Abstract: A key-value store and a file system (100) are integrated together to provide improved operations. The key-value store can include a log engine (104), a hash engine (106), a sorting engine (108), and a garbage collection manager (110). The features of the key-value store can be configured to reduce the number of I/O operations involving the file system, thereby improving read efficiency, reducing write latency, and reducing write amplification issues inherent in the combined key-value store and file system (100).

公开(公告)号：EP4330831A2

公开(公告)日：2024-03-06

申请号：EP22865179.0

申请日：2022-08-02

Applicant: Lemon Inc.

Inventor： CHEN, Jianjun ,  DING, Yonghua ,  LIU, Ye ,  LI, Fangshi ,  CAO, Lixun ,  LIU, Yang ,  ZHANG, Li ,  ZHANG, Mingyi ,  MENG, Xiangrui ,  ZHAO, Junda ,  ZHANG, Lei ,  SHI, Rui

IPC: G06F16/23 ,  G06F16/27 ,  G06F16/28 ,  G06F16/22 ,  G06F16/901