公开(公告)号：US20210311962A1

公开(公告)日：2021-10-07

申请号：US16835549

申请日：2020-03-31

Applicant: SAP SE

Inventor： Seungho Yoo ,  Ji Hoon Jang ,  Seyeong Bae ,  Yong Sik Kwon ,  Hyeong Seog Kim

IPC: G06F16/27 ,  G06F16/23

Abstract: Methods, systems, and computer-readable storage media for receiving a first storage request indicating a first type of data and a first size, identifying a first sub-space based on the first type, the first sub-space including a dense group of dense segments and a sparse group of sparse segments, and determining that the dense group of the first sub-space is absent a dense segment to store data of the first storage request based on the first size, and in response: determining whether the sparse group of the first sub-space includes a sparse segment to store the data of the first storage request based on the first size, and storing the data of the first storage request to the sparse group of the first sub-space in response to determining that the sparse group of the first sub-space includes a sparse segment to store the data of the first storage request.

公开(公告)号：US11137911B2

公开(公告)日：2021-10-05

申请号：US16503122

申请日：2019-07-03

Applicant: SAP SE

Inventor： Yong Sik Kwon ,  Jaeyun Noh ,  Juchang Lee ,  Ji Hoon Jang ,  Sang Kyun Cha

IPC: G06F3/06 ,  G06F9/46 ,  G06F9/54 ,  G06F9/44 ,  G06F9/48 ,  G06F9/52 ,  G06F13/16 ,  G06F9/445 ,  G06F9/4401

Abstract: Technologies are described for restarting an application while maintaining data in memory (e.g., using shared memory). For example, shared memory can be associated with an application. The shared memory can also be associated with a holder process to maintain the shared memory from the time the application stops to the time the application starts again. When the application starts, the shared memory can be associated with the started application. In addition, restart of in-memory databases can be provided using shared memory. For example, in-memory data can be maintained when a database process or database management system stops and starts (e.g., during a restart).