Updated Ignite description
Project: http://git-wip-us.apache.org/repos/asf/ignite/repo Commit: http://git-wip-us.apache.org/repos/asf/ignite/commit/214ae3e3 Tree: http://git-wip-us.apache.org/repos/asf/ignite/tree/214ae3e3 Diff: http://git-wip-us.apache.org/repos/asf/ignite/diff/214ae3e3 Branch: refs/heads/ignite-gg-14206 Commit: 214ae3e36f5501314cc5f9978c7cd00cdfa61435 Parents: 134a687 Author: Denis Magda <dma...@gridgain.com> Authored: Tue Sep 25 23:08:05 2018 -0700 Committer: Denis Magda <dma...@gridgain.com> Committed: Tue Sep 25 23:08:05 2018 -0700 ---------------------------------------------------------------------- README.md | 38 +++++++++++++++++++++++++++----------- README.txt | 12 ++++++------ 2 files changed, 33 insertions(+), 17 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/ignite/blob/214ae3e3/README.md ---------------------------------------------------------------------- diff --git a/README.md b/README.md index b4a9b23..e6f5abf 100644 --- a/README.md +++ b/README.md @@ -16,26 +16,42 @@ You can find the full Apache Ignite documentation here: [Full documentation][doc ## What is Apache Ignite? -[Apache Ignite][apache-ignite-homepage] is a memory-centric multi-model distributed - <strong>database</strong>, <strong>caching</strong>, and <strong>processing</strong> platform for - transactional, analytical, and streaming workloads, delivering in-memory speeds at petabyte scale. +[Apache Ignite][apache-ignite-homepage] is a memory-centric distributed <strong>database</strong>, <strong>caching</strong>, + and <strong>processing</strong> platform for transactional, analytical, and streaming workloads delivering in-memory + speeds at petabyte scale. <p align="center"> - <a href="https://apacheignite.readme.io/docs";> - <img src="https://ignite.apache.org/images/durable-memory.png"; width="900px"/> + <a href="https://ignite.apache.org/whatisignite.html";> + <img src="https://ignite.apache.org/images/ignite_architecture.png"; width="900px"/> </a> </p> -## Durable Memory -Ignite's durable memory component treats RAM not just as a caching layer but as a complete fully functional storage layer. This means that users can turn the persistence on and off as needed. If the persistence is off, then Ignite can act as a distributed **in-memory database** or **in-memory data grid**, depending on whether you prefer to use SQL or key-value APIs. If the persistence is turned on, then Ignite becomes a distributed, **horizontally scalable database** that guarantees full data consistency and is resilient to full cluster failures. +## Memory-Centric Storage +Apache Ignite is based on distributed memory-centric architecture that combines the performance and scale of in-memory +computing together with the disk durability and strong consistency in one system. -[Read More](https://apacheignite.readme.io/docs/durable-memory) +The main difference between the memory-centric approach and the traditional disk-centric approach is that the memory +is treated as a fully functional storage, not just as a caching layer, like most databases do. +For example, Apache Ignite can function in a pure in-memory mode, in which case it can be treated as an +In-Memory Database (IMDB) and In-Memory Data Grid (IMDG) in one. + +On the other hand, when persistence is turned on, Ignite begins to function as a memory-centric system where most of +the processing happens in memory, but the data and indexes get persisted to disk. The main difference here +from the traditional disk-centric RDBMS or NoSQL system is that Ignite is strongly consistent, horizontally +scalable, and supports both SQL and key-value processing APIs. + +[Read More](https://ignite.apache.org/arch/memorycentric.html) ## Ignite Persistence -Ignite Native Persistence is a distributed, ACID, and SQL-compliant **disk store** that transparently integrates with Ignite's Durable Memory as an optional disk layer storing data and indexes on SSD, Flash, 3D XPoint, and other types of non-volatile storages. +Ignite Native Persistence is a distributed, ACID, and SQL-compliant **disk store** that transparently integrates with +Ignite memory-centric storage as an optional disk layer storing data and indexes on SSD, + Flash, 3D XPoint, and other types of non-volatile storages. -With the Ignite Persistence enabled, you no longer need to keep all the data and indexes in memory or warm it up after a node or cluster restart because the Durable Memory is tightly coupled with persistence and treats it as a secondary memory tier. This implies that if a subset of data or an index is missing in RAM, the Durable Memory will take it from the disk. +With the Ignite Persistence enabled, you no longer need to keep all the data and indexes in memory or warm it +up after a node or cluster restart because the Durable Memory is tightly coupled with persistence and treats +it as a secondary memory tier. This implies that if a subset of data or an index is missing in RAM, +the Durable Memory will take it from the disk. <p align="center"> <a href="https://apacheignite.readme.io/docs/distributed-persistent-store";> @@ -43,7 +59,7 @@ With the Ignite Persistence enabled, you no longer need to keep all the data and </a> </p> -[Read More](https://apacheignite.readme.io/docs/distributed-persistent-store) +[Read More](https://ignite.apache.org/arch/persistence.html) ## ACID Compliance Data stored in Ignite is ACID-compliant both in memory and on disk, making Ignite a **strongly consistent** system. Ignite transactions work across the network and can span multiple servers. http://git-wip-us.apache.org/repos/asf/ignite/blob/214ae3e3/README.txt ---------------------------------------------------------------------- diff --git a/README.txt b/README.txt index 013f290..7cfdaad 100644 --- a/README.txt +++ b/README.txt @@ -1,16 +1,16 @@ Apache Ignite In-Memory Data Fabric =================================== -Ignite In-Memory Data Fabric is designed to deliver high performance for the widest -array of in-memory computing use cases. +Ignite is a memory-centric distributed database, caching, and processing platform for transactional, analytical, +and streaming workloads delivering in-memory speeds at petabyte scale. -The main feature set of Ignite In-Memory Data Fabric includes: +The main feature set of Ignite includes: +* Memory-Centric Storage * Advanced Clustering +* Distributed Key-Value +* Distributed SQL * Compute Grid -* Data Grid -* SQL Database * Service Grid -* IGFS - Ignite File System * Distributed Data Structures * Distributed Messaging * Distributed Events
![https://ignite.apache.org/images/durable-memory.png"](https://ignite.apache.org/images/durable-memory.png"){kind=link}
![https://ignite.apache.org/images/ignite_architecture.png"](https://ignite.apache.org/images/ignite_architecture.png"){kind=link}