Capacity and Sizing
Skyhigh CASB is designed and optimized to provide data compliance services with a minimum impact on the performance of core Salesforce services and little to no effect on user experience. Skyhigh CASB performance depends on many factors, conditions and variables, including the infrastructure and network latency where the Skyhigh CASB servers are hosted, the distance from the users to Skyhigh CASB/from Skyhigh CASB Secure to Salesforce.com, internet connection, bandwidth, and more.
Skyhigh CASB performance measurements focus on latency, which is the time that each request and response spends on Skyhigh CASB servers from the time the request hits Skyhigh CASB until it is sent to Salesforce.com or to the user respectively.
The performance benchmarking is designed to simulate typical Salesforce usage against the several Skyhigh CASB secure encryption/decryption scenarios. The objective is to provide the customer with benchmarking information they can use for capacity planning.
The figure below depicts the Skyhigh CASB secure system used for the performance benchmarking tests. The Skyhigh CASB secure system consists of four servers. One server is a load generator, one is Skyhigh CASB Secure Gateway, one is a Skyhigh CASB Secure Token Dictionary, and one is a simulated Salesforce application. The Skyhigh CASB Secure Gateway and the Token Dictionary are physical computers and all others are virtual machines.
|Server||OS (64-bit)||Cores||CPU (MHz)||Memory (GB)||Hardware|
|Skyhigh CASB Secure Gateway||CentOS||12||2.93||8||Physical|
|Simulated Salesforce app||CentOS||2||2.33||8||Virtual|
*For the Token Dictionary database, the default MySQL config parameters were used.
Based on continuous load testing and performance measurements, Skyhigh CASB’s average latency is 8.4 msec when working with up to 1,000 concurrent users (refers to 1,000 users that are working on Salesforce.com through Skyhigh CASB at the same time, an uncommon scenario). The ratio between the number of concurrent users and number of Salesforce application users (licenses), varies from one organization to another and depends on the nature of the business and the way users are using the application. In this benchmark, the assumption is that in an organization with 10,000 registered users, at most 1,000 users will work simultaneously.
Generally speaking, a single Skyhigh CASB Secure Gateway can serve up to 10,000 users while adding less than 8.4 msec per transaction. For an average Salesforce response time of 225–250 msec per transaction, this represents a Skyhigh CASB Secure incremental latency of less than 4%, considered to be negligible overhead in terms of overall user experience. The following table shows results from the benchmark performance testing for user operations on Salesforce measurements.
|Latency||Total Tx time||Concurrency|
|End User||8.4 ms||245 ms||10,000 users|
|API||28.2||700 ms||10,000 clients|