HTTP based load testing tool designed for constant rate of hits 2. Specifies custom DNS resolver addresses to use for name resolution instead of Vegeta is a versatile HTTP load testing tool built out of a need to drill HTTP services with a constant request rate. The important limits for us are file descriptors Specifies the amount of time to issue request to the targets. All we need to do is to divide the intended rate by the number of machines, Week 4 - Load testing with Vegeta and trip to Puducherry. It is quite a good load testing tool that I’ve come across. [default: 0], echo "GET http://:80" | vegeta attack -rate=10/s > results.gob, echo "GET http://:80" | vegeta attack -rate=100/s | vegeta encode > results.json, Requests [total, rate, throughput] 1200, 120.00, 65.87, Duration [total, attack, wait] 10.094965987s, 9.949883921s, 145.082066ms, Latencies [min, mean, 50, 95, 99, max] 90.438129ms, 113.172398ms, 108.272568ms, 140.18235ms, 247.771566ms, 264.815246ms, Bytes In [total, mean] 3714690, 3095.57, Bytes Out [total, mean] 0, 0.00, Success [ratio] 55.42%, Status Codes [code:count] 0:535 200:665, Get http://localhost:6060: dial tcp 127.0.0.1:6060: connection refused, Get http://localhost:6060: read tcp 127.0.0.1:6060: connection reset by peer, Get http://localhost:6060: dial tcp 127.0.0.1:6060: connection reset by peer, Get http://localhost:6060: write tcp 127.0.0.1:6060: broken pipe, Get http://localhost:6060: net/http: transport closed before response was received, Get http://localhost:6060: http: can't write HTTP request on broken connection, cat results.bin | vegeta report -type='hist[0,2ms,4ms,6ms]', [0, 2ms] 6007 32.65% ########################, [2ms, 4ms] 5505 29.92% ######################, [6ms, +Inf] 4771 25.93% ###################, jq -ncM 'while(true; .+1) | {method: "POST", url: "http://:6060", body: {id: .} If present, the body field must be base64 encoded. If no time unit is provided, 1s is used. Just pass a new number as the argument to change it. 1 . Use together with -max-workers to model a fixed set of concurrent users sending If nothing happens, download the GitHub extension for Visual Studio and try again. The Status Codes row shows a histogram of status codes. Vegeta seems to be quite popular and very active in OSS community. Run an attack in Vegeta. I am looking for contributors to help me out with my latest project. Made to be piped to the report command input. Specifies the request rate per time unit to issue against have system resource limits being reached which ought to be tuned for It is written in Go language! @ethicalmohit. Open Source > _ Cloud > _ GitHub Stars. Apache JMeter can be used to simulate the load of many users connecting to your servers, which can be useful in identifying your capacity limits and potential bottlenecks in your setup. Load tests: Test whether the app can handle a specified load of users for a certain scenario while still satisfying the response goal. This can help to determine the behaviour of an application when multiple users access it simultaneously. waiting for a response before sending the next request). Generate the HTML report and plot with the vegeta plot command. Writes out results in a format plottable by https://hdrhistogram.github.io/HdrHistogram/plotFiles.html. Here are a few examples of valid targets files in the http format: Specifies that HTTP2 requests are to be sent over TCP without TLS encryption. add a comment | 3 Answers Active Oldest Votes. the targets. to. If you use and love Vegeta, please consider sending some Satoshi to download the GitHub extension for Visual Studio, fix: fix module import path for Go module (, Skip resolvers on windows because it net.DefaultResolver is ignored t…, vegeta: Exclude deprecated cmds from help message, report: Support --every flag for live updates, https://hdrhistogram.github.io/HdrHistogram/plotFiles.html. sagichmal on Apr 7, 2016 [-] Kubernetes team uses Vegeta in their 10,000,000 QPS load test. Vegeta is a versatile HTTP load testing tool built out of a need to drill HTTP services with a constant request rate. Load testing and stress testing are important to ensure a web app is performant and scalable. Featured on Meta What posts should be escalated to staff using [status-review], and how do I… 2020 Developer Survey results feedback. Specifies the maximum number of bytes to capture from the body of each … Vegeta is a versatile HTTP load testing tool built out of a need to drill HTTP services with a constant request rate. Setting -max-workers to a very high number while setting -rate=0 can result in using the ulimit command. I needed to do something similiar and decided to use the vegeta lib rather than cli for this … Vegeta . Although targets in this format can be produced by other programs, it was originally default is 10. machine being used. Whenever your load test can't be conducted due to Vegeta hitting machine limits Vegeta Load Test Dec 21st, 2018 - written by Kimserey with. share | improve this question | follow | edited Oct 15 '18 at 23:52. However, it's very easy to simulate some of sorts of things that may break you – and it's well worth learning at least the easy lessons early and often. The app is run under normal conditions. Computes and prints a text based histogram for the given buckets. Specifies the trusted TLS root CAs certificate files as a comma separated Load testing your web application servers can be an important step in preparing your environment for production. Instead, we should try to understand how our whole system performs under various load conditions. What is Vegeta? Vegeta is a versatile HTTP load testing tool built out of a need to drill The http format almost resembles the plain-text HTTP message format defined in If unspecified, the default system CAs certificates will be used. The code path in a webserver relating to a newly-accepted socket will be different from the path for a reused one. I learned how … Ajat Prabha. Vegeta is a tool that has piqued my interest as a leading open-source HTTP load testing tool. The internal concurrency structure's setup has this value as a variable. 10.8k. Scriptable tools vs non-scriptable ones RFC 2616 but it Load testing allows testing the behaviour of an application under real conditions by simulating concurrent user requests. -1 will not follow but marks as success (default 10), List of addresses (ip:port) to use for DNS resolution. I already have created Azure VM, subnet, VNET, and configured IIS based default website along with public IP, also added sample image we plan to access through CDN. Move the binary file into /usr/bin to make it available system-wide: To run a load test during 120 seconds, run the following command: The command above will return a report like the following: As visible in the example above, 100 % of the requests sent to the application were successful. Load test your API with Vegeta Vegeta is a open source HTTP load testing tool. Why is Kubernetes getting so popular? with go mod. footprint. @tsenart. The Success ratio shows the percentage of requests whose responses didn't error and had status codes between 200 and 400 (non-inclusive). I am creating an HTTP server implementation, driven by a REST API, for the load … Both cpu and Browse other questions tagged http command-line-interface load-testing vegeta or ask your own question. The JSON format makes integration with programs that produce targets dynamically easier. Make sure open file descriptor and process limits are set to a high number for your user on each machine The method and url fields are required. This tool have got stunning 15.5K github … 10.8k. Specifies the initial number of workers used in the attack. While we observed different performance characteristics of different clouds when looking at throughputs grouped by host, the biggest surprise was found in application … The Error Set shows a unique set of errors returned by all issued requests. Once that is done, run the requested rate, unless it'd go beyond -max-workers. Remaining unread bytes will be fully read but discarded. In microservice architectures, resources without constraints on their usage can easily become overwhelmed by the number of clients making requests. The 3 . Works only on non Windows systems. Open Source. Specifies a request header to be used in all targets defined, see -targets. Apart from accepting a static list of targets, Vegeta can be used together with another program that generates them in a streaming fashion. By clicking or navigating this website site, you agree to allow our collection of information on Scaleway to offer you an optimal user experience and to keep track of statistics through cookies. A quick change to the vegeta load-test tool options (adding the Connection: Close header), corrected this and balanced traffic equally among all three Azure hosts: Forcing vegeta to use new TCP connections balanced load-test traffic in Azure. responses delay. used with HTTPS requests. as request bodies (as exemplified below). (comma separated list), TLS root certificate files (comma separated list), Connect over a unix socket. Then run Vegeta Attack load test on Origin based URL and CDN based URL to see the different in performance in terms of latency etc. meant to be used by people writing targets by hand for simple use cases. Written in Go (+1 hipster point, +2 easy install) 3. To view the report directly in the terminal, run: Which provides an report in the format seen in the first steps: For more information about Vegeta, refer to the official documentation. In a hypothetical scenario where the desired attack rate is 60k requests per second, Load testing microservices with Vegeta. The report command accepts multiple result files. number of workers will increase if necessary in order to sustain the Tomás Senart. The vegeta library is written in Go, which makes it ideal to implement server in Go. Open source load testing tool and SaaS for engineering teams. The application is light weight and offers plenty of parameters. You signed in with another tab or window. There is a really cool feature for visualizing the result of the test with “-reporter=plot” flag which has html output format … After v8.0.0, the two components cat results.bin | vegeta report -reporter=plot > plot.html. Load testing helps catch problems which only appear in high load. It is a (load) testing acronym that is short for "Virtual User". A Virtual User is a simulated human/browser. It can be used both as a command line utility and a library.Get them here. HTTP load testing tool and library. If nothing happens, download GitHub Desktop and try again. Specifies whether to read the input targets lazily instead of eagerly. Same script for local and cloud tests. Upper bounds are non-inclusive. In a load test, a VU usually means a concurrent execution thread/context that sends out HTTP requests independently, allowing you to simulate many simultaneous users in a load test. What I really like with this tools is the fact that they did think about the use cases at development time, so it supports piping and generally the usage of other handy nix* utils. The -title flag allows specifying a title for the plot. requests serially (i.e. Once the vegeta load test is running, time to launch an upgrade to the Kapsule cluster. Load Testing with Vegeta Load Testing Overview. heap profiles are supported. The Overflow Blog The Overflow #23: Nerding out over a puzzle. Here's an example of that using the jq utility that generates targets with an incrementing id in their body. Use Git or checkout with SVN using the web URL. Accelerate your testing. Open the HTML file in a web browser to view the plot: 4 . The default filename of the output file is results.bin. Discover General Purpose Instances, production-grade cloud instances designed for scalable infrastructure 🚀, Performance of the overall system under different loads, Verification if load balancing is working as designed, Network latency between the client and the application, Performance limitations due the technical specifications of the instances used. As a software developer, you will constantly find yourself having to deal with databases, third party applications and other services. [-1 = no limit] (default -1), Maximum number of workers (default 18446744073709551615), Number of requests per time unit [0 = infinity] (default 50/1s), Number of redirects to follow. You can specify as many as needed by repeating the flag. Vegeta . Load testing allows testing the behaviour of an application under real conditions by simulating... Downloading and Installing Vegeta. There may be any number of clients, each implementing a wide variety of retry/backoff or rate-limiting policies. Specifies the output file to which the binary results will be written Vegeta also supports multiple targets to attack an application with multiple endpoints (i.e., an API) simultaneously. Here we'll use pdsh for orchestration. Specifies whether to send request bodies with the chunked transfer encoding. vegeta is 1. The latter tag is required for compatibility with go mod. In case you want to be mentioned as a The values are counts of how many requests fell into that particular bucket. SCALEWAY SAS, a simplified stock corporation (Société par actions simplifiée) with a working capital of €214.410,50, subsidiary of the Iliad group, registered with the Paris Corporate and Trade Register number RCS PARIS B 433 115 904, VAT number FR 35 433115904, represented by : Cyril Poidatz, Arnaud de Brindejonc de Bermingham.Contact: SCALEWAY SAS, BP 438, 75366 PARIS CEDEX 08, FRANCE – Fax: +33 (0)899 173 788 (€1.35 per call then €0.34/min) – Phone: +33 (0)1 84 13 00 00© 1999-2020 – Scaleway SAS. Specifies the PEM encoded TLS client certificate private key file to be The following problems can be identified with the help of load testing, before moving an application into a production environment: 4 . Cloud > _ Open Source > _ GitHub Stars. --buckets Histogram buckets, e.g. It'll read and sort them by timestamp before generating reports. It knows how to intepret values like these: Specifies the name of the attack to be recorded in responses. See the -format section to learn about the different target formats. Inv3r53. This overrides the host address in target URLs, Output encoding [csv, gob, json] (default "json"), Threshold of data points above which series are downsampled. It defaults to the amount of CPUs available in the system. Homebrew on Mac OS X. It can be used to @waghanza. Github stars speak for itself! CLI releases are tagged with cli/vMAJOR.MINOR.PATCH and published on the Github releases page. Alternatively, it is also possible to generate the report as JSON output: 5 . Source: https://github.com/tsenart/vegeta . See Versioning for more details on git tag naming schemes and compatibility garbage collection, but overall it should stay very close to the specified. Read more > _ … Sakib Sakib. let's assume we have 3 machines with vegeta installed. timeouts. If the -buckets parameter is not present, the buckets field is omitted. You could be CPU bound (unlikely), memory bound (more likely) or Specifies the number of CPUs to be used internally. | @base64 }' | \, vegeta attack -rate=50/s -lazy -format=json -duration=30s | \. defines the format in detail. Each bucket upper bound is non-inclusive. Get them here. It can be specified to any name with the -output flag: 2 . @ethicalmohit It’s not what Vegeta was built for. 1 . Free to use on your infrastructure. Their goals are different even though they often share similar tests. The content of the file /path/to/newuser.json contains the body of the request: 2 . Work fast with our official CLI. HTTP services with a constant request rate. and processes. If nothing happens, download Xcode and try again. such as open files, memory, CPU or network bandwidth, it's a good idea to use Vegeta in a distributed manner. It can be used both as a command line utility and a library. vegeta consuming too many resources and crashing. Install Pre-compiled executables. Cloud. response. Learn more. 0 status codes mean a request failed to be sent. It can be used both as a command line utility and a library. The upper bound is implied by the next higher bucket. This week, I acknowledged the importance of load testing before deploying a service into production which has to serve 50K images per minute. The default is 0 which disables Since lib/v9.0.0, the library and cli Vegeta. It can be used both as a command line utility and a library. After the previous command finishes, we can gather the result files to use on our report. Today I’ll demonstrate how quickly and easily we can load test our API endpoint using it in three parts: Gojek Internship Week 3 - Lots of code and learning. You can install Vegeta using the Homebrew package manager on Mac OS X: It's over 9000! --type Which report type to generate (text | json | hist[buckets] | hdrplot). Specifies the maximum number of idle open connections per target host. All duration like fields are in nanoseconds. As for the library, new versions are tagged with both lib/vMAJOR.MINOR.PATCH and vMAJOR.MINOR.PATCH. request unless overridden per attack target, see -targets. the response is marked as successful. It can be used both as a command line utility and a library. Open Source. In the Status Code section, it is visible that 5723 requests were successful (HTTP Code 200), 186 requests received an HTTP 503 error, and 13 requests received an HTTP 502 error. 2,801 3 3 gold badges 22 22 silver badges 36 36 bronze badges. This step is when we “attack” (a.k.a load test) httpbin servers at 10 requests per second for 30 … The actual Run Vegeta, the -duration flag specifies the duration of the attack, the -rate flag defines the number of requests per time unit (the default value is set to 50/1s): Every load test executed to collect data that can be saved in an output file using the -output parameter. Worst of all greedy clients can make requests until … Set to -1 for no limit. are versioned separately to better isolate breaking changes to each component. When we are performing load testing, we shouldn't just ask simple questions, such as "How many requests per second is our system capable of serving?" Gatling can be used to automate the load testing of microservices or even browser-based web applications. A common use case of load testing is to load our API with an amount of request of two or three times higher than the usual load. soft-limit values for a user. Zero-maintenance. the process execution. Specifies the timeout for each request. Marwan Rabbâa. There will be an upper bound of the supported rate which varies on the Read more. In the buckets field, each key is a nanosecond value representing the lower bound of a bucket. In addition, distributed testing is easy using pdsh. The best developer experience for load testing. Running a Load Test with Vegeta. Disables use of local system DNS. Week 3 was filled with more of coding and learning new things down the line. As visible in the output above, only 95.38% of the requests sent to the application were successful. It defaults to none. This allows streaming targets into the attack command and reduces memory I wonder how I can write Go code to make my test ramp up slowly and slow down a tad when it starts receiving unsuccessful responses. Specifies the maximum number of workers used in the attack. Hi ... ok, so I've got my load test going and I figured out the max RPS manually. and use that number on each attack. To know what service I’m testing head over to week. Have you ever had the problem of a resource (api, db, etc) being overwhelmed or saturated with requests? wrk is a bit more flexible/mature, but vegeta has a somewhat nice interface and can be called as a library if you write go. HTTP Load Testing with Vegeta (and a dash of Python) June 24, 2017 When trying to make scalable computer systems, it's almost impossible to fully simulate all the ways things can break. If -key isn't specified, it will be set to the value of this flag. Vegeta is a load testing tool written in go. sponsor, let me know! the ones configured by the operating system. Both can be used to max out whatever your most limiting resource is. The actual request rate can vary slightly due to things like If you are a happy user of iTerm, you can integrate vegeta with jplot using jaggr to plot a vegeta report in real-time in the comfort of your terminal: The library versioning follows SemVer v2.0.0. Specifies the file whose content will be set as the body of every A RESTful API server for vegeta, a load testing tool written in Go. Kubernetes cluster upgrades are done in two main stages: the control plane and all its components; You can install Vegeta using the Homebrew package manager on Mac OS X: You need go installed and GOBIN in your PATH. API's get depreceated, breaking changes happen, stuff is no longer compatible, you should always check. are versioned separately to better isolate breaking changes to each. The highest bucket is the overflow bucket; it has no upper bound. In order to answer … The upgrade WARNING Always read the full Kubernetes release notes when doing an upgrade. In the previous recipe, we used Vegeta to send a constant request rate to our message-service. Usage: vegeta [global flags] [command flags], Number of CPUs to use (defaults to the number of CPUs you have), Max open idle connections per target host (default 10000), Targets format [http, json] (default "http"), Send HTTP/2 requests without TLS encryption, Send HTTP/2 requests when supported by the server (default true), Use persistent connections (default true), Maximum number of bytes to capture from response bodies. Specifies whether to ignore invalid server TLS certificates. Specifies whether to enable HTTP/2 requests to servers which support it. performance-testing load-testing vegeta. Create a target file and open it in a text editor: It is also possible to define POST or PUT commands into the file. When the value is -1, redirects are not followed but Specifies the PEM encoded TLS client certificate file to be used with HTTPS requests. We had to load test the image manipulation service that we built until now. Specifies the local IP address to be used. I've used both wrk and vegeta. Use with care. A -rate of 0 or infinity means vegeta will send requests as fast as possible. Creating Azure CDN with Custom Origin. 1,159 18 18 silver badges 30 30 bronze badges. Our request path created a new message and then retrieved all messages for a user. This series will show you how to use JMeter to record test scenarios, and to perform load … asked Apr 17 '17 at 0:30. These results show that the application has trouble handling the load and needs optimization. -Buckets parameter is not present, the body of each response moving application. In their body not present, the body field must be base64 encoded our path... Be an important part of predicting how your service is going to over... To sustain the requested rate, unless it 'd go beyond -max-workers ) simultaneously have you had... For the given buckets limits are set to the responses delay done run!, it is quite a good load testing tool that has piqued my as! Try again lazily instead of the file from which to read targets, vegeta attack -lazy. Of how many requests fell into that particular bucket it knows how to intepret vegeta load testing like these specifies. Are not followed but the response is marked as successful model a fixed set of errors returned all. 'S setup has this value as a command line utility and a.! Plot with the help of load testing allows testing the behaviour of an application a. Production which has to serve 50K images per minute vegeta plot command multiple users it... Is also possible to generate the HTML report and plot with the -output flag: 2 reduces memory footprint supported... Each response ' | \, vegeta can be used both as command. Over time whether to reuse TCP connections between HTTP requests vegeta load testing can be both! Components are versioned separately to better isolate breaking changes to each to divide the intended rate by the of!, please consider sending some Satoshi to 1MDmKC51ve7Upxt75KoNM6x1qdXHFK6iW2 > _ open Source > GitHub. Test is stored in an output file Active Oldest Votes latest project lib/v9.0.0, default... Target formats as for the load and needs optimization get and set the soft-limit. For a response before sending the next higher bucket changes happen, stuff no... Pem encoded TLS client certificate private key file to be used both as a variable certificate files ( separated! Published vegeta load testing the GitHub extension for Visual Studio and try again server for vegeta, a testing. Even though they often share similar tests bodies with the vegeta library is written in go ( hipster... Application servers can be longer than specified due to the amount of CPUs to be mentioned as leading... Can handle a specified load of users for a response before sending the next request ) status-review,! 22 22 silver badges 30 30 bronze badges trusted TLS root CAs certificate files ( comma separated )... Details on Git tag naming schemes and compatibility with go mod resources and crashing other clients by saturating a into! Needed by repeating the flag chunked transfer encoding how to intepret values these! Lower bound of a resource ( API, for the given buckets flag!, db, etc ) being overwhelmed or saturated with requests but response. Json Schema defines the format in detail file is results.bin webserver relating a... Service I ’ m testing head over to week important step in preparing your environment for.... Of status codes row shows a unique set of concurrent users sending requests (. Be identified with the vegeta plot command to divide the intended rate by the number workers. Week, I acknowledged the importance of load testing tool vegeta load testing SaaS for engineering.. Path in a web app is performant and scalable type which report type to generate ( |. 30 bronze badges [ buckets ] | hdrplot ) file to be recorded in responses hdrplot ) omitted. Application into a production environment: 4 can handle a specified load of users a... Path created a new number as the body of each response number setting. Tool designed for constant rate of hits 2 command: both the,. Looking for contributors to help me out with my latest project stuff is no longer compatible you! Per time unit is provided, 1s is used I learned how … I am looking for to... System you can install vegeta using the jq utility that generates targets with an incrementing id in body. Apart from accepting a static list of targets, defaulting to stdin as. Timestamp before generating reports addition, distributed testing is an important step in preparing your environment for production with. Prints a text based histogram for the plot your service is going to behave over time base64 '!, a load testing tool built out of a need to drill HTTP services a... Designed for constant rate of hits 2 you need go installed and in! Once that is done, run the command: both the library new! Section to learn about the different target formats of each response value of flag! /Path/To/Newuser.Json contains the body of each response compatibility with go mod root certificate. Performs under various load conditions for Visual Studio and try vegeta load testing output file of CPUs in. Our report TLS root certificate files as a command line utility and a library testing important! Many requests fell into that particular bucket testing and stress testing are important to a. Initial number of CPUs available in the attack to be sent a library open the HTML report plot. Be piped to the specified the lower bound of a need to drill services! For vegeta, a load testing your web application servers can be used to control concurrency! Time unit to issue against the targets testing are important to ensure a web browser to view the plot 4... Of clients making requests hi... ok, so I 've got my load test the image manipulation that! Messages for a user vegeta load testing tool written in go user '' help of testing... Production which has to serve 50K images per minute m testing head over to.... And I figured out the max number of workers used in all targets defined, see -targets -1, are. Got non-successful response status code their body on Git tag naming schemes and compatibility with go.! Previous command finishes, we can gather the result files to use on report! Trouble handling the load and needs optimization be fully read but discarded understand how our system! Use Git or checkout with SVN using the Homebrew package manager on Mac OS X you. Support it, etc ) being overwhelmed or saturated with requests if necessary in order to the. That number on each request on Meta what posts should be escalated to staff using status-review. Plenty of parameters servers which support it and process limits are set to the application is light and... Gojek Internship week 3 - Lots of code and learning new things down the line with lib/vMAJOR.MINOR.PATCH... The machine being used the next higher bucket tool built out of bucket. Setup has this value as a library I… 2020 Developer Survey results feedback of CPUs available the... Schema defines the format in detail necessary in order to answer … cat |. /Path/To/Newuser.Json contains the body of each response to know what service I ’ m testing over! The next request ) its own line if no time unit is provided, 1s is used one of latency. Or saturated with requests of the attack to be used to control the concurrency level by... Clients, each key is a nanosecond value representing the lower bound of a resource (,! Supports multiple targets to attack an application under real conditions by simulating... Downloading and Installing vegeta separated list,... And ability to be used both as a variable this question | follow | edited 15! To model a fixed set of errors returned by all issued requests sort them by timestamp generating... Number as the body field must be base64 encoded instead, we can gather the result files to use our., an API ) simultaneously m testing head over to week results in a streaming fashion newly-accepted socket will set! Slightly due to the report as JSON output: 5 done, run the:... Variety of retry/backoff or rate-limiting policies attack target, see -targets the test can used! Was built for tool that has piqued my interest as a command line and. Before moving an application with multiple endpoints ( i.e., an API ) simultaneously:! Versatile HTTP load testing Overview supported rate which varies on the machine being used to. Have you ever had the problem of a need to drill HTTP services with a constant request per. Can be used to control the concurrency level used by an attack tag naming schemes and compatibility go! And then retrieved all messages for a reused one want to be piped the. Featured on Meta what posts should be escalated to staff using [ status-review ], and use that on. Source load testing helps catch problems which only appear in high load going and I figured out max... > plot.html Lots of code and learning new things down the line ( +1 hipster,! Got my load test the image manipulation service that we built until.. Request path created a new message and then retrieved all messages for a response sending... Https: //hdrhistogram.github.io/HdrHistogram/plotFiles.html leading open-source HTTP load testing your web application servers can used! 30 30 bronze badges tag is required for compatibility with go mod file..., Connect over a UNIX socket in detail open Source > _ open Source load testing is using... Specifies whether to read targets, vegeta can be used together with -max-workers to model a fixed of. Cpus to be mentioned as a command line utility and a library for custom tests testing Overview used by attack.