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HAProxy pros and cons

Vendor: HAProxy

4.2 out of 5

48 reviews
92% willing to recommend

Pros & Cons summary

HAProxy is highly reliable, offering 99.9% uptime and efficient performance, which reduces downtime and operational costs. Its ease of use and scalability allow handling millions of transactions seamlessly. Despite having exceptional technical support, users face challenges with troubleshooting, cryptic logging, and lack of dynamic API for live updates. The pricing model and absence of full layer 7 SSL termination across multiple cores suggest areas for cost-effectiveness and flexibility improvements.

Buyer's Guide

Get pricing advice, tips, use cases and valuable features from real users of this product.

Prominent pros & cons

PROS

HAProxy is highly reliable and stable, providing 99.9% uptime and reducing possible downtime significantly.

Users have experienced monetary savings and fewer employee needs due to HAProxy's efficiency and low maintenance requirements.

HAProxy offers valuable ease of use and excellent documentation, allowing seamless configuration changes without downtime.

HAProxy's scalability and performance have positively impacted organizations, handling millions of transactions per second and meeting demanding customer requirements.

Technical support for HAProxy is exceptional, with quick response times and knowledgeable representatives ready to assist with various issues.

CONS

HAProxy troubleshooting can be challenging due to the open-source nature, and incidents may present difficulties.

HAProxy lacks a dynamic update API, resulting in challenges with live configuration changes, such as dynamic ACL and port updates.

The logging functionality is cryptic and requires improved documentation for better usability when interpreting logs.

HAProxy's performance issues may arise due to the lack of support for full layer 7 SSL termination across multiple cores.

Pricing model and dynamic configuration of HAProxy have room for improvement, potentially impacting cost-effectiveness and flexibility.

HAProxy Pros review quotes

Shrinivas Devarkonda

Head of DevOps at TripFactory

Nov 17, 2025

We have reduced a lot of servers, replacing them with one or two HAProxy servers which deliver better performance, accuracy, and an almost 100% success rate with requests coming from customers or other sources, and there are no loopholes, disconnects, or gaps in the entire data flow.

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reviewer2775702

Principal Engineer Manager at a manufacturing company with 501-1,000 employees

Nov 10, 2025

HAProxy positively impacted our organization by exceeding scalability expectations, initially projected at 200k requests but ultimately handling over 15 million transactions per second without any issues.

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MR

Muhammad Choirul

Junior System Administrator & DevOps at a tech services company with 11-50 employees

Oct 3, 2025

With centralized SSL termination and automated renewals now in place, that time requirement has dropped to nearly zero hours, translating to dozens of hours saved per year.

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reviewer2774310

DevOps engineer at a tech services company with 1-10 employees

Nov 2, 2025

HAProxy has positively impacted my organization by making it easier for me to manage configurations; I put configuration files on the Ceph storage shared across the whole cluster, allowing me to write my configuration, change it easily in one place, and reload it.

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Kaushlendra Singh

Manager - IT Infrastructure and Network at a manufacturing company with 1,001-5,000 employees

Aug 20, 2024

We use the solution for load balancing.

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Mehdi El Filahi

Co-Founder at tenekit

Apr 17, 2024

What I like best about the product is its simplicity and speed. When you need to set up a load balancer quickly, HAProxy offers options like sticky sessions and round-robin. It's also fast to configure, including adding SSL for security. While it may have fewer options than other solutions like F5, HAProxy gets the job done for basic load-balancing tasks.

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Manager server admin and security at Vivaconnect

Mar 4, 2024

HAProxy's TCP load balancer is excellent and super stable.

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Roger Seelaender

UCaaS Engineering Manager at EarthLink

Oct 21, 2022

The features I find valuable in this solution are session control which automatically disconnects users that forget to log off, and the ability to write rules to either allow or block certain file requests.

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Tomislav Horvatović

System Administrator at Styria IT

Sep 18, 2023

It is a crucial tool in ensuring smooth service provision without any interruptions.

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Développeur applications at Trust Merchant Bank

Apr 25, 2023

We use it as a load balancer for our application servers.

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Show 10 more reviews (out of 45)

HAProxy Cons review quotes

Shrinivas Devarkonda

Head of DevOps at TripFactory

Nov 17, 2025

I'm unsure about the benchmark of those HTTP 2.0 requests on HAProxy.

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reviewer2775702

Principal Engineer Manager at a manufacturing company with 501-1,000 employees

Nov 10, 2025

A significant area for improvement in HAProxy is its tenancy model; managing multiple environments can be challenging, especially with mergers, acquisitions, or domain changes.

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MR

Muhammad Choirul

Junior System Administrator & DevOps at a tech services company with 11-50 employees

Oct 3, 2025

The configuration syntax is powerful yet can become overwhelming for newcomers; a more beginner-friendly interface or a native GUI without relying on third-party tools would ease the onboarding process.

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Free Report: HAProxy Reviews and More

Learn what your peers think about HAProxy. Get advice and tips from experienced pros sharing their opinions. Updated: July 2026.

906,829 professionals have used our research since 2012.

reviewer2774310

DevOps engineer at a tech services company with 1-10 employees

Nov 2, 2025

An alerting system would be better as I need to check log files if any backend is down.

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Kaushlendra Singh

Manager - IT Infrastructure and Network at a manufacturing company with 1,001-5,000 employees

Aug 20, 2024

The solution's dashboards and reports could be improved.

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Mehdi El Filahi

Co-Founder at tenekit

Apr 17, 2024

Improving the documentation with multiple examples and scenarios would be beneficial. Most users encounter similar situations, so having a variety of scenarios readily available on the tool's website would be helpful. For instance, if I were part of the HAProxy team, I'd create a webpage with different scenarios and provide files for each scenario. This way, users wouldn't have to start from scratch every time.

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Manager server admin and security at Vivaconnect

Mar 4, 2024

HAProxy is very weak in the logging and monitoring part and requires improvement.

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Roger Seelaender

UCaaS Engineering Manager at EarthLink

Oct 21, 2022

The solution can be improved by controlling TCP behavior better and mandating to clients what the expected outcome must be in order to avoid receiving contestant timeout logs.

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Tomislav Horvatović

System Administrator at Styria IT

Sep 18, 2023

There is room for improvement in HAProxy's dynamic configuration.

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Développeur applications at Trust Merchant Bank

Apr 25, 2023

There is room for improvement in the pricing model. It could be cheaper.

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Show 10 more reviews (out of 45)

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