Java-Chronicle | Java Indexed Record Chronicle | SQL Database library

by peter-lawrey Java Version: v1.9.1 License: No License

X-Ray Key Features Code Snippets(1)Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | Java-Chronicle Summary

Java-Chronicle is a Java library typically used in Telecommunications, Media, Media, Entertainment, Database, SQL Database applications. Java-Chronicle has build file available and it has medium support. However Java-Chronicle has 36 bugs and it has 1 vulnerabilities. You can download it from GitHub, Maven.

Java Indexed Record Chronicle

Support

Quality

Security

License

Reuse

Support

Java-Chronicle has a medium active ecosystem.

It has 1223 star(s) with 196 fork(s). There are 146 watchers for this library.

It had no major release in the last 6 months.

There are 8 open issues and 18 have been closed. On average issues are closed in 352 days. There are 5 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of Java-Chronicle is v1.9.1

Quality

Java-Chronicle has 36 bugs (11 blocker, 4 critical, 8 major, 13 minor) and 735 code smells.

Security

Java-Chronicle has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

Java-Chronicle code analysis shows 1 unresolved vulnerabilities (1 blocker, 0 critical, 0 major, 0 minor).

There are 21 security hotspots that need review.

License

Java-Chronicle does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

Java-Chronicle releases are not available. You will need to build from source code and install.

Deployable package is available in Maven.

Build file is available. You can build the component from source.

Installation instructions are not available. Examples and code snippets are available.

Java-Chronicle saves you 9980 person hours of effort in developing the same functionality from scratch.

It has 20324 lines of code, 1321 functions and 160 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed Java-Chronicle and discovered the below as its top functions. This is intended to give you an instant insight into Java-Chronicle implemented functionality, and help decide if they suit your requirements.

The main method
Reads one or more messages from the engine
Release resources held by this instance
Reads the excerpt from the engine
Main method
Registers the market data
Reload an excerpt
Handles an excerpt
Registers an excerpt event
Read list
Creates an iterator that iterates over the contents of this array
Read messages from the reader
Inject a model
Registers an excerpt
Finds and returns the index where the key matches
Creates an indexed chronicle source
Reads a double value from the stream
Parses a decimal
Starts the test suite
Decompose the given scope
Main entry point
Performs a range search
Runs the client
Reads an indexed chronicle
Generates a mapped section of a file channel
Start an excerpt of the chronicle

Get all kandi verified functions for this library.

Java-Chronicle Key Features

No Key Features are available at this moment for Java-Chronicle.

Java-Chronicle Examples and Code Snippets

chronicle vs chronicle-queue package

Java

Lines of Code : 24

License : Strong Copyleft (CC BY-SA 4.0)

Copy

Chronicle chronicle =  ChronicleQueueBuilder.indexed(_location).build();
ExcerptAppender appender = chronicle.createAppender();
appender.startExcerpt();
appender.writeUTF("Hello World");

try (final ChronicleQueue q

Community Discussions

Trending Discussions on Java-Chronicle

Chronicle Queue - Read from last read position and delete files if read by all consumers

chronicle vs chronicle-queue package

QUESTION

Chronicle Queue - Read from last read position and delete files if read by all consumers

Asked 2019-Nov-06 at 13:09

I am using Chronicle 4.5.27 for writing and reading market data. I have got a single writer but multiple readers. Development OS is Windows followed by Linux for Prod deployment.

How to implement following uses cases?

How to start reading queues form last read position ? e.g. if reader has read 15 records from a file which has 100 records and crashed/stopped how to start reading from 16th record from next restart? Is there an inbuilt durable support in CQ?
Delete files which are read by all consumers to save disk space.

For this I have implemented but seems the files are not deleted on windows due to some open issue. Is there any built support in CQ where files can be deleted only if proceeded by all interested consumers?

...

ANSWER

Answered 2017-Nov-13 at 14:36

Tracking of the consumer high-water mark is performed using MessageHistory, however, this requires that your consumers are also writing output to a chronicle queue (essentially storing the consumer read-sequence in the output queue).

Alternatively, you would need to implement your own mechanism for recording the highest sequence (index) each consumer has seen.

In terms of deleting files, there may be other processes holding open file handles to the queue files. If reader-A is no longer using queue file 15.cq4, then your code will attempt to call file.delete(), but reader-B may still have a reference to that file, stopping it from being deleted.

A more robust policy would be to have some sort of event from each reader to another service/process that is responsible for deleting the files once all readers have finished processing them.

Source https://stackoverflow.com/questions/47263251

QUESTION

chronicle vs chronicle-queue package

Asked 2019-Aug-14 at 16:24

I'm just getting started with chronicle queue - however I'm a bit confused on which API to use for reading/writing to the queue. Specifically chronicle-queue-5 vs chronicle-3.5.*

I've gone through this link which basically uses chronicle-queue API , but there are others like this which uses chronicle.

What is the difference between these 2 below?

...

ANSWER

Answered 2019-Aug-14 at 16:24

They are both writing a message to a chronicle queue. I belive this

Source https://stackoverflow.com/questions/57498047

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install Java-Chronicle

You can download it from GitHub, Maven.
You can use Java-Chronicle like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the Java-Chronicle component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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