PREV | HOME | NEXT (coming soon) Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. Let’s consider the cliche example of a bank transaction. Say Trump is making an online transfer of $100 into Biden’s bank account. To reflect this transaction…

PREV | HOME | NEXT Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. Rebalancing Partitions As a system ages and user access patterns change over time, some partitions may handle a greater portion of the overall load on the system than their fair…

PREV | HOME | NEXT Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. So far we have covered material on partitioning data. If the access patterns for the stored data also use columns/fields other than the primary key, then we may…

PREV | HOME | NEXT Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. The goal of partitioning data is to distribute data evenly across all the nodes in the system. …

PREV | HOME | NEXT Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. When designing applications, programmers often face the use case where they need to check whether an element is present in a set. For example, when creating a new…

PREV | HOME | NEXT Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. Introduction When data stored by a system on a single node becomes too large, it is broken-up into parts and each part is stored on a separate node. In…

PREV | HOME | NEXT Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. Replication Keeping a copy of the same data on multiple machines connected by a network is known as “Replication”. Why Replicate? There are several reasons why data must be replicated. …

PREV | HOME | NEXT Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. Multileader architectures come in different topologies. A replication topology refers to how nodes in a system are set-up to exchange local writes, i.e. …

PREV | HOME | NEXT Read System Design resources by signing-up for Medium, or if you prefer video courses, check out Udacity. So far we have examined what is called a strict quorum in contrast to a sloppy quorum which we’ll discuss next. Consider a system composed of several dozen…