Dynamically provisioning instances of a single-tenant application for multi-tenant use

Patent metadata

Field	Value
Publication number	US-10467241-B2
Application number	US-201715468648-A
Country	US
Kind code	B2
Filing date	Mar 24, 2017
Priority date	Mar 24, 2017
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

Provided is a process, including: assigning different instances of a single-tenant application among a plurality of instances of the single-tenant application to different computing sessions with different client computing devices associated with different tenant user accounts; while the plurality of instances of the single-tenant application are executing, determining that a workload of the plurality of instances of the single-tenant application satisfies a first threshold condition; in response to the determination, automatically provisioning an added instance of the single-tenant application; and assigning the added instance of the single-tenant application to a session with a given client computing device.

First claim

What is claimed is:

1. A tangible, non-transitory, machine-readable medium storing instructions that when executed by one or more processors effectuate operations to dynamically provision and terminate instances of a single-tenant application deployed for a multi-tenant use case based on workload, the operations comprising:
assigning, with one or more processors, different instances of a single-tenant application among a plurality of instances of the single-tenant application to different computing sessions with different client computing devices associated with different tenant user accounts, wherein:
each instance of the single-tenant application is configured, either before, upon, or after launching, to access data of the single-tenant application in a database,
the database stores data of multiple tenants accessed by instances of the single-tenant application, and
the stored data of different tenants among the multiple tenants is associated with different tenant user accounts;

while the plurality of instances of the single-tenant application are executing, determining, with one or more processors, in a first determination, that a workload of the plurality of instances of the single-tenant application satisfies a first threshold condition;
in response to the first determination, automatically provisioning, with one or more processors, an added instance of the single-tenant application;
assigning, with one or more processors, the added instance of the single-tenant application to a session with a given client computing device;
receiving, with one or more processors, a database access request from the added instance of the single-tenant application to the database to access data of a tenant having a tenant user account, wherein the given computing device is logged into the tenant user account;
modifying, with one or more processors, the received database access request to add a reference to a field of the database having values that distinguish data of different tenants among the multiple tenants from data of other tenants among the multiple tenants;
sending, with one or more processors, the modified database access request to the database;
after provisioning the added instance of the single-tenant application, determining, with one or more processors, in a second determination, that a workload of the single-tenant application satisfies a second threshold condition, the second threshold condition corresponding to a smaller workload than the first threshold condition; and
in response to the second determination, automatically terminating, with one or more processors, at least one instance of the single-tenant application, wherein:
each instance of the single-tenant application is accessed by a single tenant at a time, and
a number of instances of the single-tenant application executing is dynamically scaled responsive to workload.

2. The medium of claim 1 , wherein:
the single-tenant application is configured to not distinguish among the multiple tenants in access requests to the database; and
the operations comprise editing queries from instances of the single-tenant application to the database to add a query predicate that specifies the queries do not apply to data of tenants in the database other than a tenant identified by the query predicate.

3. The medium of claim 1 , wherein:
the first determination is made responsive to a request from the given client computing device to access the single-tenant application.

4. The medium of claim 1 , wherein:
the first determination is made before receiving a request from the given client computing device to initiate a session with the single-tenant application; and
the session with the given client computing device is the first session with a client computing device of the added instance of the single-tenant application.

5. The medium of claim 1 , wherein:
the database is a noSQL (no structured query language) document database having a plurality of documents identified in at least one index of contents of the documents;
the at least one index has an alias with a filter configured to segment the at least one index according to tenant identifier; and
modifying the received database access request comprises specifying a tenant identifier to be applied by the filter of the alias.

6. The medium of claim 1 , wherein:
the added instance of the single-tenant application is executed in a different container, virtual machine, or computing device from at least some of the other instances of the single-tenant application; and
a reverse proxy server routes messages between each of the instances of the single-tenant applications and client computing devices.

7. The medium of claim 1 , wherein:
the plurality of instances of the single-tenant application are part of a hybrid single-tenant/multi-tenant application in which a multi-tenant application writes data to the database and the data is viewed or otherwise accessed by tenant users via the single-tenant application.

8. The medium of claim 7 , wherein:
the multi-tenant application comprises a monitoring application configured to monitor delivery of a plurality of applications provided by respective ones of the multiple tenants.

9. The medium of claim 1 , wherein:
different tenants access the same instance of the single-tenant application at different times but not concurrently.

10. The medium of claim 1 , wherein the operations comprise:
executing a process that monitors a log file of each instance of the single-tenant application, wherein determining that the workload of the single-tenant application satisfies the second threshold condition comprises determining that a timestamp of a most recent transaction in the log file of at least one instance of the single-tenant application is older than a threshold age.

11. The medium of claim 1 , wherein:
provisioning the added instance of the single-tenant application comprises adding a service corresponding to the single-tenant application to a computing device executing a plurality of services corresponding to other instances of the single-tenant application, wherein at least some of the services have a plurality of processes.

12. The medium of claim 1 , wherein:
the added instance of the single-tenant application executes on a single computing device along with the plurality of instances of the single-tenant application;
provisioning the added instance of the single-tenant application comprises:
identifying a port number of the computing device that is not assigned to another instance of the single-tenant application; and
configuring the added instance of the single-tenant application to monitor the added port number by writing the port number to a human readable hierarchical serialization data format document storing configuration settings of the added instance.

13. The medium of claim 12 , wherein:
provisioning, the first determination, the second determination, and terminating are performed by a service executing on a computing device that executes the plurality of instances of the single-tenant application and the added instance of the single-tenant application.

14. The medium of claim 1 , wherein provisioning, terminating, or both comprise:
steps for dynamically scaling a number of instances of a single-tenant application based on workload.

15. A method, comprising:
assigning, with one or more processors, different instances of a single-tenant application among a plurality of instances of the single-tenant application to different computing sessions with different client computing devices associated with different tenant user ac

Assignees

• Ca Inc

Inventors

• Thayer Nicholas D
• Garcia Julio
• Perkins James
• Bell Mark

Classifications

• G06F9/5072

  Grid computing · CPC title

• G06F9/45558

  Hypervisor-specific management and integration aspects · CPC title

• G06F16/252 Primary

  between a Database Management System and a front-end application · CPC title

• G06F9/505

  considering the load · CPC title

• G06F2009/4557

  Distribution of virtual machine instances; Migration and load balancing · CPC title