What Are Monotonic Reads? Monotonic reads is a consistency guarantee that prevents a client from observing time going backward. Once […]
What Is Session Consistency? Session consistency is a client-centric consistency model that provides guarantees within the scope of a single
What Is Causal Consistency? Causal consistency is a consistency model that sits between eventual consistency and linearizability. If operation A
What Is Linearizability? Linearizability is the strongest consistency model for single-object operations. It guarantees that every operation appears to take
What Is Eventual Consistency? Eventual consistency is a consistency model that guarantees: if no new updates are made to a
Why Cross-Region Replication? Cross-region replication serves three primary goals: disaster recovery (survive a full regional outage), lower read latency for
What Is Shard Rebalancing? Shard rebalancing is the process of redistributing data across shards to address imbalances: hot shards that
What Is Connection Draining? Connection draining is the process of gracefully removing a server from service by allowing its in-flight
Why Hot-Cold Tiering? Not all data is accessed equally. A small fraction of items (the “hot” set) drives the majority
What Is a Materialized View? A materialized view is a precomputed result of a query stored as a physical table.
What Is a Read-Through Cache? In a read-through cache, the cache layer itself is responsible for loading data from the
What Is a Write-Behind Cache? A write-behind cache (also called write-back cache) acknowledges writes to the client immediately after updating
The Problem: Multi-Service Data Assembly In a microservices architecture, a single client-facing response often requires data from several independent services.
What Is a Read-Write Proxy? A read-write proxy is a transparent middleware layer sitting between your application and a database
What Is the Cache-Aside Pattern? Cache-aside (also called lazy loading) is the most common caching strategy in production systems. The
