Apache Ignite Çorbası: Thin Client

Giriş

Not : Thin Client ve JDBC farklı şeyler!

Açıklaması şöyle

Thin clients are actually much closer to what we usually think about when talking about clients. A thin client is very lightweight, initiates a single TCP socket connection with one of the nodes in the cluster, and communicates via a simple binary protocol. It also follows a very straightforward request-response pattern.

Desteklenen Özellikler

Açıklaması şöyle

Thin client is my favorite choice. You can see supported features in this table.

So the latest versions of thin clients can do almost everything and do not have a few disadvantages. It doesn’t insert into topology but connects to one of the server nodes. The version of thin clients can be different from the cluster version that makes cluster upgrade significantly easier.

Liste şöyle

Scan Query

Scan Query with a filter

Binary Object API

Async Operations

SSL/TLS

Authentication

Partition Awareness

Failover

Transactions

Cluster API

Compute

Service Invocation

Server Discovery

Data Streaming

Bağlantı

Açıklaması şöyle. Thin Client bir gateway düğüme bağlanır ve işleri onun üzerinden yürütür.

A thin client is not collocation-aware. It’s typically connected to only one node in the cluster, which is used as a gateway — all requests from the client go through this server node. This creates an obvious bottleneck. Some implementations support load balancing between two or more nodes, but even in this case scalability is more limited than with thick clients.

API

Açıklaması şöyle

Thin clients provide limited API. Currently, you can only create/destroy caches, execute key-value operations and SQL queries. Compute Grid and Service Grid APIs are likely to be added in the future (contributions are welcome!). However, advanced features that require push notifications from servers to clients (near caches, continuous queries) or sophisticated threading models (data streaming) will most likely never be implemented for thin clients.

Bazı arayüz ve sınıflar şöyle. Tüm sınıflar şu pakette.