seastar | High performance server-side application framework | Reactive Programming library

by scylladb C++ Version: seastar-22.11.0 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(5)Vulnerabilities Install Support

kandi X-RAY | seastar Summary

seastar is a C++ library typically used in Programming Style, Reactive Programming, Framework applications. seastar has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

High performance server-side application framework

Support

Quality

Security

License

Reuse

Support

seastar has a medium active ecosystem.

It has 7390 star(s) with 1432 fork(s). There are 405 watchers for this library.

It had no major release in the last 6 months.

There are 389 open issues and 670 have been closed. On average issues are closed in 62 days. There are 84 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of seastar is seastar-22.11.0

Quality

seastar has 0 bugs and 0 code smells.

Security

seastar has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

seastar code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

seastar is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

seastar releases are not available. You will need to build from source code and install.

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

It has 3866 lines of code, 336 functions and 16 files.

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

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of seastar

Get all kandi verified functions for this library.

seastar Key Features

No Key Features are available at this moment for seastar.

seastar Examples and Code Snippets

No Code Snippets are available at this moment for seastar.

Community Discussions

Trending Discussions on seastar

Single return type in Hibernate Search

copy assignment operator implicitly deleted because field has a deleted copy assignment operator

Pandas tocsv() function parameter sep add double quote on my data

converting a method into a member functor object which calls the method leads to a crash

How seastar invoke codes on different cpus?

QUESTION

Single return type in Hibernate Search

Asked 2021-Oct-28 at 08:25

Let's say I have an app with many different entities, which do not have relations between each other.

I would like to create a search that queries all of them, but returns a unified type, i.e:

...

ANSWER

Answered 2021-Oct-28 at 08:25

Note that you don't need to assign each type to the same index; Hibernate Search is perfectly capable of searching through multiple indexes in a single query. And performance would likely be identical (Lucene indexes are often split into multiple segments under the hood anyway).

That being said, here's how you could do it, assuming there's a constructor in SearchResult:

Source https://stackoverflow.com/questions/69735853

QUESTION

copy assignment operator implicitly deleted because field has a deleted copy assignment operator

Asked 2021-Sep-16 at 01:09

I'm getting this error as soon as I define a destructor, but without that the compilation succeed, but I badly want to define destructor to debug some seg faults.

...

ANSWER

Answered 2021-Sep-15 at 23:58

Add

Source https://stackoverflow.com/questions/69200846

QUESTION

Pandas tocsv() function parameter sep add double quote on my data

Asked 2021-Apr-17 at 18:46

I have been trying to save my dataframe to a txt file using the tocsv() function, but then some of my data come up with quotation mark, some don't. What is causing pandas to add quotation mark on my data and is there anyway to remove it?

Here's the dataframe

...

ANSWER

Answered 2021-Apr-01 at 23:43

Quotes are added whenever a data point contains the separator. In this case, space " ". You can change the separator, remove all the spaces in the data or have the quotes.

In other case, the syntax of the CSV file is not parsable because the interpretation of the space character is ambiguous.

Possibly using "\t" (a tab) as a separator could be a good solution for you.

Just specify: sep='\t'

Source https://stackoverflow.com/questions/66912741

QUESTION

converting a method into a member functor object which calls the method leads to a crash

Asked 2020-Feb-17 at 13:55

I have the following method in a class:

...

ANSWER

Answered 2020-Feb-17 at 13:55

Turns out that the whole class was getting copied somewhere, and then the functor's reference to the outer class was pointing to the old location ==> memory corruption.

Source https://stackoverflow.com/questions/60247203

QUESTION

How seastar invoke codes on different cpus?

Asked 2020-Jan-09 at 11:34

I am currently working with seastart framework, and find it claims that seastart can submit task to different cpus.

Seastar claims that it shares nothing between different coers.

So I think seastar binds differnet threads to different cpus, and make different tasks submited to different background threads(called engine、container or something).

How seastar achieve this, use pthread_setaffinity_np ?

But before task submitted, codes still work on random thread? Just key resources like network socket or storages are distributed to different cpus by coding using smp::submit_to explicitly?

...

ANSWER

Answered 2020-Jan-09 at 11:34

I've never heard of Seastar until now and the picture looks horribly inefficient. As is confirmed by benchmarks. It is way more efficient to have a single stack per thread, since the top of the stack is always "hot" (cached in L1).

Anyway, yes, to pin a thread to a core you can use platform-specific API. In case of POSIX that would be pthread_setaffinity_np:

Source https://stackoverflow.com/questions/59659862

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

Vulnerabilities

No vulnerabilities reported

Install seastar

You can download it from GitHub.

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 .

Find more information at: