1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
librdkafka - the Apache Kafka C/C++ client library
==================================================
Copyright (c) 2012-2022, [Magnus Edenhill](http://www.edenhill.se/).
2023 [Confluent Inc.](https://www.confluent.io/).
[https://github.com/confluentinc/librdkafka](https://github.com/confluentinc/librdkafka)
**librdkafka** is a C library implementation of the
[Apache Kafka](https://kafka.apache.org/) protocol, providing Producer, Consumer
and Admin clients. It was designed with message delivery reliability
and high performance in mind, current figures exceed 1 million msgs/second for
the producer and 3 million msgs/second for the consumer.
**librdkafka** is licensed under the 2-clause BSD license.
KAFKA is a registered trademark of The Apache Software Foundation and
has been licensed for use by librdkafka. librdkafka has no
affiliation with and is not endorsed by The Apache Software Foundation.
# Features #
* Full Exactly-Once-Semantics (EOS) support
* High-level producer, including Idempotent and Transactional producers
* High-level balanced KafkaConsumer (requires broker >= 0.9)
* Simple (legacy) consumer
* Admin client
* Compression: snappy, gzip, lz4, zstd
* [SSL](https://github.com/confluentinc/librdkafka/wiki/Using-SSL-with-librdkafka) support
* [SASL](https://github.com/confluentinc/librdkafka/wiki/Using-SASL-with-librdkafka) (GSSAPI/Kerberos/SSPI, PLAIN, SCRAM, OAUTHBEARER) support
* Full list of [supported KIPs](INTRODUCTION.md#supported-kips)
* Broker version support: >=0.8 (see [Broker version compatibility](INTRODUCTION.md#broker-version-compatibility))
* Guaranteed API stability for C & C++ APIs (ABI safety guaranteed for C)
* [Statistics](STATISTICS.md) metrics
* Debian package: librdkafka1 and librdkafka-dev in Debian and Ubuntu
* RPM package: librdkafka and librdkafka-devel
* Gentoo package: dev-libs/librdkafka
* Portable: runs on Linux, MacOS X, Windows, Solaris, FreeBSD, AIX, ...
# Documentation
* Public API in [C header](src/rdkafka.h) and [C++ header](src-cpp/rdkafkacpp.h).
* Introduction and manual in [INTRODUCTION.md](https://github.com/confluentinc/librdkafka/blob/master/INTRODUCTION.md).
* Configuration properties in
[CONFIGURATION.md](https://github.com/confluentinc/librdkafka/blob/master/CONFIGURATION.md).
* Statistics metrics in [STATISTICS.md](https://github.com/confluentinc/librdkafka/blob/master/STATISTICS.md).
* [Frequently asked questions](https://github.com/confluentinc/librdkafka/wiki).
* Step-by-step tutorial [Getting Started with Apache Kafka and C/C++](https://developer.confluent.io/get-started/c/).
**NOTE**: The `master` branch is actively developed, use latest [release](https://github.com/confluentinc/librdkafka/releases) for production use.
# Installation
## Installing prebuilt packages
On Mac OSX, install librdkafka with homebrew:
```bash
$ brew install librdkafka
```
On Debian and Ubuntu, install librdkafka from the Confluent APT repositories,
see instructions [here](https://docs.confluent.io/current/installation/installing_cp/deb-ubuntu.html#get-the-software) and then install librdkafka:
```bash
$ apt install librdkafka-dev
```
On RedHat, CentOS, Fedora, install librdkafka from the Confluent YUM repositories,
instructions [here](https://docs.confluent.io/current/installation/installing_cp/rhel-centos.html#get-the-software) and then install librdkafka:
```bash
$ yum install librdkafka-devel
```
On Windows, reference [librdkafka.redist](https://www.nuget.org/packages/librdkafka.redist/) NuGet package in your Visual Studio project.
For other platforms, follow the source building instructions below.
## Installing librdkafka using vcpkg
You can download and install librdkafka using the [vcpkg](https://github.com/Microsoft/vcpkg) dependency manager:
```bash
# Install vcpkg if not already installed
$ git clone https://github.com/Microsoft/vcpkg.git
$ cd vcpkg
$ ./bootstrap-vcpkg.sh
$ ./vcpkg integrate install
# Install librdkafka
$ vcpkg install librdkafka
```
The librdkafka package in vcpkg is kept up to date by Microsoft team members and community contributors.
If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
## Build from source
### Requirements
The GNU toolchain
GNU make
pthreads
zlib-dev (optional, for gzip compression support)
libssl-dev (optional, for SSL and SASL SCRAM support)
libsasl2-dev (optional, for SASL GSSAPI support)
libzstd-dev (optional, for ZStd compression support)
libcurl-dev (optional, for SASL OAUTHBEARER OIDC support)
**NOTE**: Static linking of ZStd (requires zstd >= 1.2.1) in the producer
enables encoding the original size in the compression frame header,
which will speed up the consumer.
Use `STATIC_LIB_libzstd=/path/to/libzstd.a ./configure --enable-static`
to enable static ZStd linking.
MacOSX example:
`STATIC_LIB_libzstd=$(brew ls -v zstd | grep libzstd.a$) ./configure --enable-static`
### Building
./configure
# Or, to automatically install dependencies using the system's package manager:
# ./configure --install-deps
# Or, build dependencies from source:
# ./configure --install-deps --source-deps-only
make
sudo make install
**NOTE**: See [README.win32](README.win32) for instructions how to build
on Windows with Microsoft Visual Studio.
**NOTE**: See [CMake instructions](packaging/cmake/README.md) for experimental
CMake build (unsupported).
## Usage in code
See [getting Started with Apache Kafka and C/C++](https://developer.confluent.io/get-started/c/) for a basic tutorial.
1. Refer to the [examples directory](examples/) for code using:
* Producers: basic producers, idempotent producers, transactional producers.
* Consumers: basic consumers, reading batches of messages.
* Performance and latency testing tools.
2. Refer to the [examples GitHub repo](https://github.com/confluentinc/examples/tree/master/clients/cloud/c) for code connecting to a cloud streaming data service based on Apache Kafka
3. Link your program with `-lrdkafka` (C) or `-lrdkafka++` (C++).
## Commercial support
Commercial support is available from [Confluent Inc](https://www.confluent.io/)
## Community support
**Only the [latest official release](https://github.com/confluentinc/librdkafka/releases) is supported for community members.**
File bug reports and feature requests using [GitHub Issues](https://github.com/confluentinc/librdkafka/issues).
Questions and discussions are welcome on the [Discussions](https://github.com/confluentinc/librdkafka/discussions) forum, and on the [Confluent Community slack](https://launchpass.com/confluentcommunity) #clients channel.
# Language bindings #
* C#/.NET: [confluent-kafka-dotnet](https://github.com/confluentinc/confluent-kafka-dotnet) (based on [rdkafka-dotnet](https://github.com/ah-/rdkafka-dotnet))
* C++: [cppkafka](https://github.com/mfontanini/cppkafka)
* C++: [modern-cpp-kafka](https://github.com/Morgan-Stanley/modern-cpp-kafka)
* Common Lisp: [cl-rdkafka](https://github.com/SahilKang/cl-rdkafka)
* D (C-like): [librdkafka](https://github.com/DlangApache/librdkafka/)
* D (C++-like): [librdkafkad](https://github.com/tamediadigital/librdkafka-d)
* Erlang: [erlkaf](https://github.com/silviucpp/erlkaf)
* Go: [confluent-kafka-go](https://github.com/confluentinc/confluent-kafka-go)
* Haskell (kafka, conduit, avro, schema registry): [hw-kafka](https://github.com/haskell-works/hw-kafka)
* Kotlin Native: [Kafka-Kotlin-Native](https://github.com/icemachined/kafka-kotlin-native)
* Lua: [luardkafka](https://github.com/mistsv/luardkafka)
* Node.js: [node-rdkafka](https://github.com/Blizzard/node-rdkafka)
* OCaml: [ocaml-kafka](https://github.com/didier-wenzek/ocaml-kafka)
* Perl: [Net::Kafka](https://github.com/bookingcom/perl-Net-Kafka)
* PHP: [php-rdkafka](https://github.com/arnaud-lb/php-rdkafka)
* PHP: [php-simple-kafka-client](https://github.com/php-kafka/php-simple-kafka-client)
* Python: [confluent-kafka-python](https://github.com/confluentinc/confluent-kafka-python)
* Python: [PyKafka](https://github.com/Parsely/pykafka)
* Ruby: [Hermann](https://github.com/reiseburo/hermann)
* Ruby: [rdkafka-ruby](https://github.com/appsignal/rdkafka-ruby)
* Rust: [rust-rdkafka](https://github.com/fede1024/rust-rdkafka)
* Tcl: [KafkaTcl](https://github.com/flightaware/kafkatcl)
* Shell: [kafkacat](https://github.com/edenhill/kafkacat) - Apache Kafka command line tool
* Swift: [Perfect-Kafka](https://github.com/PerfectlySoft/Perfect-Kafka)
See [Powered by librdkafka](https://github.com/confluentinc/librdkafka/wiki/Powered-by-librdkafka) for an incomplete list of librdkafka users.
|
