Polly
Polly is a .NET resilience and transient-fault-handling library that allows developers to express policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner. From version 6.0.1, Polly targets .NET Standard 1.1 and 2.0+. (by App-vNext)
LevelDB
LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values. (by google)
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| Polly | LevelDB | |
|---|---|---|
| 52 | 27 | |
| 12,991 | 35,046 | |
| 1.4% | 1.2% | |
| 9.8 | 0.0 | |
| about 22 hours ago | 7 days ago | |
| C# | C++ | |
| BSD 3-clause "New" or "Revised" License | BSD 3-clause "New" or "Revised" License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Polly
Posts with mentions or reviews of Polly.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-07-11.
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The Retry Pattern and Retry Storm Anti-pattern
In our applications, we should wrap all requests to remote services in code that implements a retry policy that follows one of the strategies I listed earlier. If you are a .NET developer like myself, you may be familiar with the Polly library. Golang has a library called Retry, and there are numerous third-party libraries for Python and Java.
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Http calls on mobile, what is the preferred way / best practice
Another question that rises is, would it be better to use some HttpClient package to handle the requests, like Refit in combination with Polly. But then again, it seems Refit also uses the HttpClient factory, which was a bad thing according to the previous?
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[Question] HttpClient does not recover from error
D'Oh! Sorry, not PolySharp. I meant Polly. Too many similarly-named libraries!
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I thought "Availability Groups" would be 100% "seamless"
Everywhere I've worked with AGs, we've worked with the application team to add retry logic to help make things a bit more seamless to end users. There are libraries out there that can make this pretty easy - Polly is one that I've used a few times, but there are others.
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Do you really need "microservices"?
Fallacy 1: The network is reliable. If system 2 works perfectly well, but is not accessible for service 1 due to network issues, service 2 is still unavailable. This is why timeouts, service breakers and retry policies exist. A great tool for .NET to handle common network issues is Polly, but even when using a tool like this, the network is still not completely reliable.
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Only "exit 1" if VISIBLE errors are thrown during script invocation, ignoring try/catch blocks
I see. Then I don't have any better idea right now, but I do want to suggest that if your script is mostly API calls and you want to be able to deal with failures then take a look at the polly library: https://github.com/App-vNext/Polly
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Getting back into C# after a hiatus, any good reading material recommendations to get back up to speed? Been using Kotlin recently, and got quite a lot of experience in engineering.
Runs in containers nicely, has good integration with Kafka, RabbitMQ, gRPC, etc. for Microservices communication. Implements resiliency patterns you'd want in Microservices via Polly. Has a decent Dependency Injection framework built in by default.
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What your hidden nuget gems ?
It's in no way hidden. But I use Polly all the time.
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Message Queueing
Depending if the sender or the reciever is down, you can also try Polly http://www.thepollyproject.org/
- How To Implement Retries Without Cluttering Your Code
LevelDB
Posts with mentions or reviews of LevelDB.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-12-05.
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Codebases to read
I'm partial to how cleanly written https://github.com/google/leveldb is. It is a reasonable size to fully read & grok in not too long.
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Unpacking LSM-Trees: The Powerhouse Behind Modern Databases
[4] leveldb/doc/impl.md at main · google/leveldb. GitHub. Retrieved October 21, 2023 from https://github.com/google/leveldb/blob/main/doc/impl.md
- Bloom filter support to leveldb by Sanjay Ghemawat
- SQLite performance tuning: concurrent reads, multiple GBs and 100k SELECTs/s
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The Witty Guide to Installing LevelDB on Ubuntu: HostRooster® Edition
git clone https://github.com/google/leveldb.git
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Is there a lightweight, stable and embedded database library?
leveldb?
- Ask HN: What's the best source code you've read?
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LevelDB VS ZoneTree - a user suggested alternative
2 projects | 22 Aug 2022
- Is Mongo as popular in the job world as it is with tutorial makers?
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Open Source Databases in Go
goleveldb - Implementation of the LevelDB key/value database in Go.
What are some alternatives?
When comparing Polly and LevelDB you can also consider the following projects:
MediatR - Simple, unambitious mediator implementation in .NET
RocksDB - A library that provides an embeddable, persistent key-value store for fast storage.
Hangfire - An easy way to perform background job processing in .NET and .NET Core applications. No Windows Service or separate process required
MongoDB - The MongoDB Database
FluentValidation - A popular .NET validation library for building strongly-typed validation rules.
Redis - Redis is an in-memory database that persists on disk. The data model is key-value, but many different kind of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, Streams, HyperLogLogs, Bitmaps.
SQLite - Unofficial git mirror of SQLite sources (see link for build instructions)
Refit - The automatic type-safe REST library for .NET Core, Xamarin and .NET. Heavily inspired by Square's Retrofit library, Refit turns your REST API into a live interface.
LMDB - Read-only mirror of official repo on openldap.org. Issues and pull requests here are ignored. Use OpenLDAP ITS for issues.
Flurl.Http - Fluent URL builder and testable HTTP client for .NET
CouchDB - Seamless multi-master syncing database with an intuitive HTTP/JSON API, designed for reliability