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公开(公告)号：US20200159628A1
公开(公告)日：2020-05-21
申请号：US16774244
申请日：2020-01-28
Applicant: salesforce.com, inc.
Inventor： Jameison Bear Martin , Nathaniel Wyatt , Patrick James Helland , Thomas Fanghaenel , Terry Chong , Subho Sanjay Chatterjee
Abstract: Systems and methods are provided for performing a point-in-time restore of data of a first tenant of a multitenanted database system. Metadata can be located to identify an archival version of first data of the first tenant stored in immutable storage of the database system. The archival version includes a most recently committed version of each datum prior to a first point in time. By using the metadata, a restore reference set is mapped into a target database instance of the database system. The mapping can be performed when all existing data for a tenant is to be the archival version, and where versions of data and records committed after the point in time are not available to the target database instance.
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公开(公告)号：US20190278762A1
公开(公告)日：2019-09-12
申请号：US16426052
申请日：2019-05-30
Applicant: salesforce.com, inc.
Inventor： Subho Sanjay Chatterjee , Patrick James Helland , Nathaniel Wyatt , James E. Mace , Punit B. Shah
IPC: G06F16/23
Abstract: Systems and methods provide multi-version concurrency control of database records with uncommitted transactions. The system and methods may include receiving a query regarding a transaction counter number. When a transaction header identifying data is updated with the assigned transaction counter number, the updated transaction header may be used in identifying data as an instance of multiversion concurrency control information by the received query. A key lookup may be performed, and when the key lookup encounters an uncommitted row for a transaction number, a corresponding transaction header identifying data to identify a data array element to determine whether the transaction number is committed, and determining the transaction counter number when the transaction number is committed. The transaction counter number may be stamped on the row version record when it is determined that the row is committed.
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公开(公告)号：US20190042638A1
公开(公告)日：2019-02-07
申请号：US15666141
申请日：2017-08-01
Applicant: salesforce.com, inc.
Inventor： Venkateswararao Jujjuri , Nathaniel Wyatt
IPC: G06F17/30
Abstract: Techniques are disclosed relating to a database system synchronizing a current state of the database system among a plurality of nodes configured to handle requests for data of the database system stored in a distributed storage with one of the plurality of nodes being currently active and the other nodes of the plurality of nodes being currently standby nodes. In various embodiments, the active node receives a request to perform a transaction that includes committing data to the distributed storage. In response to receiving the request, in some embodiments, the active node commits the data to the distributed storage to update the current state of the database system and causes storing of metadata that provides an indication of the commitment in a transaction log stored in the distributed storage.
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公开(公告)号：US20180373741A1
公开(公告)日：2018-12-27
申请号：US15634786
申请日：2017-06-27
Applicant: Salesforce.com, inc.
Inventor： Jameison Bear Martin , Nathaniel Wyatt , Gary J. Baker , Randy Spalten
IPC: G06F17/30
Abstract: System and methods are provided for creating a tenant of a database system, the tenant to have tenant data stored in an immutable storage of the database system associated with a tenant identifier. A request may be received at the database system to create a new tenant. A template tenant metadata of a template tenant may be selected at the database system to create the new tenant based on the received request. A new tenant identifier may be created at the database system based on the selected template tenant metadata. The new tenant may be created by associating the new tenant identifier with a snapshot of at least a portion of the template tenant metadata at a point in time when the template tenant metadata is made accessible to the new tenant. Systems and methods are also provided for removing a tenant of a database system by removing references to a tenant identifier.
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公开(公告)号：US20180373604A1
公开(公告)日：2018-12-27
申请号：US15634796
申请日：2017-06-27
Applicant: salesforce.com, inc.
Inventor： Jameison Bear Martin , Nathaniel Wyatt , Patrick James Helland , Thomas Fanghaenel , Terry Chong , Subho Sanjay Chatterjee
IPC: G06F11/14
CPC classification number: G06F11/1469 , G06F11/1451 , G06F11/1471 , G06F11/1474 , G06F16/219 , G06F2201/80 , G06F2201/805 , G06F2201/82 , G06F2201/84
Abstract: Systems and methods are provided for performing a point-in-time restore of data of a first tenant of a multitenanted database system. Metadata can be located to identify an archival version of first data of the first tenant stored in immutable storage of the database system. The archival version includes a most recently committed version of each datum prior to a first point in time. By using the metadata, a restore reference set is mapped into a target database instance of the database system. The mapping can be performed when all existing data for a tenant is to be the archival version, and where versions of data and records committed after the point in time are not available to the target database instance.
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Patent Agency Ranking
公开(公告)号：US20180129585A1
公开(公告)日：2018-05-10
申请号：US15345914
申请日：2016-11-08
Applicant: salesforce.com, inc.
Inventor： Jameison Bear Martin , Subho Sanjay Chatterjee , Patrick James Helland , Nathaniel Wyatt , Thomas Fanghaenel , Terry Chong
CPC classification number: G06F11/3664 , G06F11/3696 , G06F17/30289 , G06F17/30424
Abstract: Systems and methods are provided for creating a sandbox for an original tenant at a point in time, the original tenant having original tenant data stored in an immutable storage associated with an original tenant identifier, the original tenant data as of the sandbox creation point in time being a virtual snapshot of the original tenant data accessible by a sandbox tenant, where the sandbox tenant data can be changed without changing the original tenant data, and the original tenant data can be changed without changing the sandbox tenant data. A sandbox tenant is created by associating a sandbox tenant identifier with the virtual snapshot of the original tenant data and with sandbox tenant data created by the sandbox tenant subsequent to the sandbox creation point in time. Original tenant data is subsequently created and associated with the original tenant identifier, and is not accessible to the sandbox tenant.
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公开(公告)号：US11841967B2
公开(公告)日：2023-12-12
申请号：US17562387
申请日：2021-12-27
Applicant: salesforce.com, inc.
Inventor： Terry Chong , Jameison Bear Martin , Thomas Fanghaenel , Andrew Tucker , Nathaniel Wyatt , Raghavendran Hanumantharau , Assaf Ben Gur , William Charles Mortimore, Jr.
IPC: G06F21/62 , G06F16/2455 , G06F21/60 , H04L9/08
CPC classification number: G06F21/6218 , G06F16/24552 , G06F21/604 , H04L9/08
Abstract: System and methods of the disclosed subject matter provide segregating, at a memory storage coupled to a multitenant database system, first tenant data of a first tenant from at least second tenant data of a second tenant, based on a first tenant identifier. A first encryption key associated with the first tenant may be retrieved from a key cache memory based on the first tenant identifier, to encrypt one or more fragments of the first tenant data. The fragments of the first tenant data may be encrypted based on the retrieved encryption key. Non-encrypted header information may be generated for each of the encrypted fragments of the first tenant data, where the header information may have metadata including the first tenant identifier. The encrypted fragments of the first tenant data and the corresponding non-encrypted header information may be stored in the immutable storage.
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公开(公告)号：US11797498B2
公开(公告)日：2023-10-24
申请号：US16950086
申请日：2020-11-17
Applicant: salesforce.com, inc.
Inventor： Jameison Bear Martin , Nathaniel Wyatt , Gary J. Baker , Thomas Fanghaenel , Terry Chong
CPC classification number: G06F16/214 , G06F16/2246 , G06F16/2282
Abstract: Systems and methods are provided for migrating a tenant of a database system from a source database instance to a destination database instance. The systems and methods include quiescing the tenant data of the tenant to be migrated from the source database instance to the destination database instance so that no new data is written to the storage of the database system associated with the tenant identifier at the source database instance, transmitting metadata of the tenant to be migrated from the source database instance to the destination database instance, and modifying, at the destination database instance, the metadata of the tenant so that the destination database instance has information to point to groupings of data in the storage for the destination database to access the tenant data.
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公开(公告)号：US11775524B2
公开(公告)日：2023-10-03
申请号：US17653820
申请日：2022-03-07
Applicant: salesforce.com, inc.
Inventor： Thomas Fanghaenel , Jameison Bear Martin , Nathaniel Wyatt , Diego Ongaro , Terry Chong
IPC: G06F12/0891 , G06F16/172 , G06F16/22 , G06F16/2455 , G06F16/84
CPC classification number: G06F16/24552 , G06F12/0891 , G06F16/172 , G06F16/2246 , G06F16/86 , G06F2212/1024 , G06F2212/163 , G06F2212/608
Abstract: Techniques are disclosed relating to maintaining a cache usable to locate data stored in a data structure. A computer system, in various embodiments, maintains a data structure having a plurality of levels that store files for a database. The files may include one or more records that each have a key and corresponding data. The computer system may also maintain a cache for the database whose entries store, for a key, an indication of a location of a corresponding record in a file of the data structure. In some embodiments, the computer system receives a request to access a particular record stored in the data structure where the request specifies a key usable to locate the particular record. The computer system may retrieve, from the cache via the key, a particular indication of a location of the particular record and may use the particular indication to access the particular record.
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公开(公告)号：US20220245092A1
公开(公告)日：2022-08-04
申请号：US17162035
申请日：2021-01-29
Applicant: salesforce.com, inc.
IPC: G06F16/14 , G06F16/182 , G06F16/17 , G06F16/172
Abstract: Techniques are disclosed relating to managing distributed storage of data with low latency access and durable storage. A distributed storage system may include storage caches distributed across availability zones in front of a shared object storage. Database nodes collocated with the storage caches may handle the storage, retrieval, and manipulation of data in the storage caches and the shared object storage. The shared object storage cache provides persistent storage of data for the distributed storage system while storage of the data in the storage caches is implemented to provide low latency retrieval of the storage. The storage caches across the availability zones may be populated through the shared object storage rather than moving data across availability zones.
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