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| 1 | +.TH NUTCRACKER 8 "June 13, 2013" |
| 2 | +.SH NAME |
| 3 | +nutcracker \- Fast, light-weight proxy for memcached and Redis |
| 4 | +.SH SYNOPSIS |
| 5 | +.B nutcracker |
| 6 | +.RI [ options ] |
| 7 | +.SH DESCRIPTION |
| 8 | +\fBnutcracker\fP, also known as \fBtwemproxy\fP (pronounced "two-em-proxy"), is |
| 9 | +a fast and lightweight proxy for the memcached and Redis protocols. |
| 10 | +.PP |
| 11 | +It was primarily built to reduce the connection count on backend caching |
| 12 | +servers, but it has a number of features, such as: |
| 13 | +.IP \[bu] |
| 14 | +Maintains persistent server connections to backend servers. |
| 15 | +.IP \[bu] |
| 16 | +Enables pipelining of requests and responses. |
| 17 | +.IP \[bu] |
| 18 | +Supports multiple server pools simultaneously. |
| 19 | +.IP \[bu] |
| 20 | +Shard data automatically across multiple servers. |
| 21 | +.IP \[bu] |
| 22 | +Supports multiple hashing modes including consistent hashing and |
| 23 | +distribution. |
| 24 | +.IP \[bu] |
| 25 | +High-availability by disabling nodes on failures. |
| 26 | +.IP \[bu] |
| 27 | +Observability through stats exposed on stats monitoring port. |
| 28 | +.SH OPTIONS |
| 29 | +.TP |
| 30 | +.BR \-h ", " \-\-help |
| 31 | +Show usage information and exit. |
| 32 | +.TP |
| 33 | +.BR \-V ", " \-\-version |
| 34 | +Show version and exit. |
| 35 | +.TP |
| 36 | +.BR \-t ", " \-\-test-conf |
| 37 | +Test configuration for syntax errors and exit. |
| 38 | +.TP |
| 39 | +.BR \-D ", " \-\-describe-stats |
| 40 | +Print stats description and exit. |
| 41 | +.TP |
| 42 | +.BR \-v ", " \-\-verbosity=\fIN\fP |
| 43 | +Set logging level to \fIN\fP. (default: 5, min: 0, max: 11) |
| 44 | +.TP |
| 45 | +.BR \-o ", " \-\-output=\fIfilename\fP |
| 46 | +Set logging file to \fIfilename\fP. |
| 47 | +.TP |
| 48 | +.BR \-c ", " \-\-conf-file=\fIfilename\fP |
| 49 | +Set configuration file to \fIfilename\fP. |
| 50 | +.TP |
| 51 | +.BR \-s ", " \-\-stats-port=\fIport\fP |
| 52 | +Set stats monitoring port to \fIport\fP. |
| 53 | +(default: 22222) |
| 54 | +.TP |
| 55 | +.BR \-a ", " \-\-stats-addr=\fIaddress\fP |
| 56 | +Set stats monitoring IP to \fIaddress\fP. |
| 57 | +(default: 0.0.0.0) |
| 58 | +.TP |
| 59 | +.BR \-i ", " \-\-stats-interval=\fIinterval\fP |
| 60 | +Set stats aggregation interval in msec to \fIinterval\fP. |
| 61 | +(default: 30000 msec) |
| 62 | +.TP |
| 63 | +.BR \-m ", " \-\-mbuf-size=\fIsize\fP |
| 64 | +Set size of mbuf chunk in bytes to \fIsize\fP. (default: 16384 bytes) |
| 65 | +.TP |
| 66 | +.BR \-d ", " \-\-daemonize |
| 67 | +Run as a daemon. |
| 68 | +.TP |
| 69 | +.BR \-p ", " \-\-pid-file=\fIfilename\fP |
| 70 | +Set pid file to \fIfilename\fP. |
| 71 | +.SH SEE ALSO |
| 72 | +.BR memcached (8), |
| 73 | +.BR redis-server (1) |
| 74 | +.br |
| 75 | +.SH AUTHOR |
| 76 | +nutcracker was written by Twitter, Inc. |
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