B4J Library Redis Server - Fast in-memory datastore

Hello everyone,
I previously released the Redis Client library, but I was using a separate third party Redis Server package not developed in B4J. Nolonger is this the case. here is a Redis Server library that you can just run and forget about, it runs silently as a background worker ready for datastore requests. Datastore requests are calls or queries sent to create, read, update, or delete data within a storage repository.

The B4J client library can be found HERE

There are other Redis server solutions on the forum created by excellent developers, and if you are looking for a Redis server, you should take a look at those as well.

What is Redis?
Redis is a high‑performance, in‑memory datastore used for speed critical applications such as caching, messaging, real time analytics, and distributed systems. The one line takeaway is that Redis is a super fast key value database that lives in RAM and is perfect for real‑time workloads.

Once up and running, Redis clients can use it as a fast in‑memory datastore. It is primarily designed for local in‑memory datastore, but it can easily be used on a server to support multiple client connections. I have successfully tested multiple remote client connectivity sessions.

B4J library tab

Spoiler: B4J Redis Server in-memory startup procedure

2026-08-25 23:26:36.821:INFO ejs.Server:main: jetty-11.0.9; built: 2022-03-30T17:44:47.085Z; git: 243a48a658a183130a8c8de353178d154ca04f04; jvm 19.0.2+7-44
2026-08-25 23:26:36.944:INFO ejss.DefaultSessionIdManager:main: Session workerName=node0
2026-08-25 23:26:36.960:INFO ejsh.ContextHandler:main: Started o.e.j.s.ServletContextHandler@123f1134{/,file:///C:/Users/Peter/Documents/B4X/B4X/B4X%20Forum%20Code%20-%20Wrappers/Redis/Redis%20Background%20Worker%20Server/RedisBackgroundWorkerServer/Objects/www/,AVAILABLE}
2026-08-25 23:26:37.006:INFO ejs.RequestLogWriter:main: Opened C:\Users\Peter\Documents\B4X\B4X\B4X Forum Code - Wrappers\Redis\Redis Background Worker Server\RedisBackgroundWorkerServer\Objects\logs\b4j-2026_08_25.request.log
2026-08-25 23:26:37.138:INFO ejs.AbstractConnector:main: Started ServerConnector@d041cf{HTTP/1.1, (http/1.1)}{0.0.0.0:8080}
2026-08-25 23:26:37.156:INFO ejs.Server:main: Started Server@3fee9989{STARTING}[11.0.9,sto=0] @642ms
Worker ended (class b4j.example.redisserver)
RedisServer: Binding Redis to 0.0.0.0:6379
Redis Server Log: Starting native Redis server on 0.0.0.0:6379
RedisServer: Redis reported started on 0.0.0.0:6379

SS_RedisServer

Author: Peter Simpson
Version: 1.0

• RedisServer
  • Events:
    • Log (Message As String)
    • ServerError (Error As String, StackTrace As String)
    • ServerStarted (Success As Boolean, Port As Int)
    • ServerStopped (Reason As String)
  • Functions:
    • Close
      Closes the server instance, stops background worker threads, and releases resources.
    • GetPort As Int
      Returns the port number the server is configured to use.
    • Initialize (maxThreads As Int)
      Initialize with default queue size (100).
    • InitializeEx (maxThreads As Int, queueSize As Int)
      Initialize with custom thread count and queue size.
    • IsInitialized As Boolean
      Returns true if the server object has been initialized and not yet closed.
    • IsRunning As Boolean
      Returns true if the embedded server is currently running and active.
    • SetDebugMode (debug As Boolean)
      Enable or disable debug mode. When enabled, error results and logs include additional details.
    • StartServerAsync (EventName As String, Port As Int)
      Starts the embedded Redis server asynchronously on the specified port using local loopback binding only.
    • StartServerExAsync (EventName As String, Port As Int)
      Starts the embedded Redis server asynchronously on the specified port using across all network interfaces.
    • StopServer
      Stops the embedded Redis server, can start again as long as you have not followed up with Close.

PLEASE NOTE:
TO RUN THE ATTACHED EXAMPLE, YOU NEED TO DOWNLOAD THE THIRD-PARTY JAVA DEPENDENCIES LINKED BELOW, AS WELL AS USING THE ATTACHED POST LIBRARY.
CLICK HERE to download extra dependencies <<<<<<<<<<<<<<<<<<<<<<<<


Enjoy...