Aiven for Valkey vs Caffeine

Aiven for Valkey is a managed in-memory key/value datastore for real-time workloads, including caching, message queuing, session storage, retrieval-augmented generation, and real-time analytics. The product page identifies Valkey 9.1 as its current version. Valkey 9 and later services include Bloom and Search modules by default; Search handles vector, full-text, numeric, and tag queries. Aiven documents compatibility with Redis OSS 7.2.4 and migration support from Redis implementations and Valkey databases. Customers can manage the service through Aiven Console, CLI, API, or Terraform. Aiven advertises a 99.99% uptime SLA, automatic failover, and backups every 12 hours on applicable plans. Security options include encryption in transit and at rest, SSO/SAML, and VPC peering. The free plan has one node, 1 CPU, and 1 GB RAM, but excludes integrations, support services, VPCs, static IPs, and the 99.99% SLA. Pricing includes a free plan, paid plans from $15/mo, and a 30-day trial.

Caffeine is a free, open-source in-memory caching library for Java, distributed under the Apache License, Version 2.0. It provides an API inspired by Google Guava and can load entries automatically, including asynchronously. Size-based eviction uses configured limits with frequency and recency, while entries can expire according to time since their last access or write. When a stale entry is first requested, Caffeine can refresh it asynchronously. Other functions include weak keys, weak or soft values, removal notifications, writes to external resources, and cache statistics. The project offers JSR-107 JCache, Guava adapters, and a simulation extension, with community integrations listed for Spring Cache, Play Framework, Micronaut, Quarkus, and Apache Camel. The project directs users to Maven Central and provides Gradle coordinates for the core library and optional extensions. Version 3.x is intended for Java 11 or newer; earlier Java versions use 2.x. Maven Central artifacts are accompanied by GPG and Sigstore signature files according to the security policy.