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What is HotKV?

HotKV is a commercial, Redis-compatible in-memory data storage solution designed specifically for application developers and infrastructure teams. It utilizes a C++20 server that effectively processes commands across multiple CPU cores and supports both RESP2 and RESP3 clients, while also providing features like persistence, Lua scripting, clustering, key-value operations, and vector similarity searching. Furthermore, it offers additional modules for prompt and semantic caching, retrieval-augmented generation (RAG), as well as monitoring the usage and budgets associated with large language models (LLMs) and memory for AI agents; these AI functionalities are available through HotKV Cloud's Performance and Scale plans or via a licensing option for on-premises deployments. HotKV Cloud functions as a managed service with dedicated instances, while the On-Premise option is compatible with x86_64 or ARM64 Linux systems, which allows it to integrate seamlessly into a customer's existing infrastructure. Since the compatibility of Redis commands and behaviors can vary, it is essential for teams to verify that all required commands and features are supported prior to migration, ensuring a seamless transition that maximizes application performance. Moreover, the comprehensive features offered by HotKV empower teams to effectively handle workloads and significantly improve their applications' overall capabilities, facilitating enhanced productivity and innovation.

What is H2?

Introducing H2, a Java SQL database tailored for effective data management. In its embedded mode, applications can directly connect to the database within the same Java Virtual Machine (JVM) via JDBC, which is the fastest and most straightforward method of connection. Nevertheless, this configuration has a limitation: it restricts database access to a single virtual machine and class loader at any given time. Similar to other operation modes, it supports both persistent and in-memory databases, allowing for an unlimited number of simultaneous database accesses or open connections. Conversely, the mixed mode merges characteristics of both embedded and server modes, where the first application connecting to the database functions in embedded mode, while concurrently initiating a server for other applications in separate processes or virtual machines to access the same data at the same time. This combination facilitates local connections to benefit from the rapid speed associated with embedded mode, though remote connections might encounter minor latency. Ultimately, H2 stands out as a versatile and powerful solution capable of meeting diverse database requirements, making it an appealing choice for developers.

Media

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Media

Integrations Supported

Claude
Cursor
LangChain
LangGraph
LiteLLM
LlamaIndex
Model Context Protocol (MCP)
OpenAI
Vercel AI SDK

Integrations Supported

Airtool
Chat2DB
DOT Anonymizer
DataGrip
DbVisualizer
DigDash
Metabase
New Relic
RazorSQL
SQLife

API Availability

Has API

API Availability

Pricing Information

$0.03/hour
HotKV Cloud Starter starts at $0.03/hour and is billed monthly or yearly in advance. Starter instances have 2 vCores, 2–8 GB RAM, and 10–40 GB disk; prices vary by region and instance size. On-premise licensing is separate.

Pricing Information

Pricing not provided

Supported Platforms

SaaS
On-Prem
Linux

Supported Platforms

Windows
Mac
Linux

Customer Service / Support

Web-Based Support

Customer Service / Support

Not specified

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

HotKV Ltd

Date Founded

2026

Company Location

United Kingdom

Company Website

hotkv.com

Company Facts

Organization Name

H2

Company Website

www.h2database.com/html/main.html

Categories and Features

In-Memory Databases

Not specified

Categories and Features

Database

Not specified

Embedded Database

Not specified

In-Memory Databases

Not specified

Relational Database

Not specified

SQL Databases

Not specified

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