Apache Bench

Apache Bench, commonly known as ab, is a command-line tool that comes bundled with the Apache HTTP Server. It is designed for performing benchmarking or load testing on web servers by generating a significant number of requests to measure how well a web server responds under a specified load.

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The basic usage of Apache Bench is as follows:

ab -n 100 -c 10 http://example.com/

Parameters:

• -n requests: Specifies the total number of requests to perform during the test.
• -c concurrency: Sets the number of multiple requests to perform at a time.
• -t timelimit: Sets a time limit for the test, terminating it after the specified number of seconds.
• -k: Enables HTTP KeepAlive, allowing multiple requests to be sent over a single persistent connection.
• -p POST-file: Allows sending POST data from a file.
• -H headerline: Adds a header to the HTTP request.

HttpMethods Examples:

1. GET

ab -n 100 -c 10 http://example.com/

2. POST

ab -n 100 -c 10 -p post_data.txt -T application/json http://example.com/

3.DELETE

ab -n 100 -c 10 -X DELETE http://example.com/

4.PUT

ab -n 100 -c 10 -p put_data.txt -T application/json -X PUT http://example.com/resource