Availability is the time portion when the system is up and running for a particular mission time. It is usually represented in percentages. For example, 99.99% availability means the system has four nines availability which is a high percentage. To calculate the availability, Availability = Uptime / (Uptime + Downtime) …

Reliability is the ability of a system with consistency and dependability to perform as expected under specific conditions over time. With redundancy, reliability is the probability of not failing in a specific environment for a particular mission time. …

Redundancy is the most common approach to making reliability and availability better in a system. To accomplish this, we use some extra or duplicate components within a system as a safety measure so that the system can function even in the case of failure and malfunctions. However, adding extra components…

We previously discussed Security Assertion Markup Language (SAML), OAuth 2.0, and OpenID Connect individually. In this one, we will discuss the differences between these authentication protocols. While OAuth 2.0 and OpenID Connect use JSON to pass the messages, SAML uses XML. The former provides us simple and better user experience…

SSO — Single Sign On is an authentication process where a user can access multiple applications using a single set of credentials. It helps the user not to have to log into numerous applications separately. There is a centralized system that stores the user credentials called Identity Provider (IdP). …

Previously, we talked about Open Authorization (OAuth 2.0). While the Open Authorization was designed to provide access to data and features between applications, OpenID Connect adds login and profile details about the client who logs in. To note, OpenID Connect lies at the top of OAuth 2.0. The Authorization Server…

OAuth 2.0 is an authorization protocol that provides consented access to the available resources on behalf of the user. No user credentials are ever shared with the Open Authorization since it provides the access to the resources such as remote APIs, user data, etc. To note, OAuth 2.0 …

Rate limiting is great with distributed systems but not without some complications. We already read about rate limiting and distributed systems before and now we will discuss the problems with them coming together. 1. Inconsistencies When you have a distributed system with clusters of multiple nodes, a global rate limit policy is…

We briefly discussed rate limiting in Endpoint Protection. Let’s see it in detail here. Rate Limiting is defined as a way that prevents the overflow of frequency of any operations than a defined limit. The main functionality of rate limiting in distributed systems is to maintain availability by sharing resources…