Provided by: varnish-redis_19.0-1_amd64 
NAME
vmod_redis - Redis VMOD
SYNOPSIS
import redis [as name] [from "path"]
VOID subnets(STRING masks)
VOID sentinels(STRING locations, INT period, INT connection_timeout, INT command_timeout, ENUM protocol, BOOL tls, STRING tls_cafile, STRING tls_capath, STRING tls_certfile, STRING tls_keyfile, STRING tls_sni, STRING password)
VOID use(STRING db)
VOID add_server(STRING location, ENUM type, STRING db)
VOID command(STRING name, STRING db)
VOID timeout(INT command_timeout, STRING db)
VOID retries(INT max_command_retries, STRING db)
VOID push(STRING arg, STRING db)
VOID execute(BOOL master, STRING db)
VOID easy_execute(STRING command, [STRING cmd_arg1], [STRING cmd_arg2], [STRING cmd_arg3], [STRING cmd_arg4], [STRING cmd_arg5], [STRING cmd_arg6], [STRING cmd_arg7], [STRING cmd_arg8], [STRING cmd_arg9], [STRING cmd_arg10], [STRING cmd_arg11], [STRING cmd_arg12], [STRING cmd_arg13], [STRING cmd_arg14], [STRING cmd_arg15], [STRING cmd_arg16], [INT timeout], [INT retries], BOOL master, STRING db)
BOOL replied(STRING db)
BOOL reply_is_error(STRING db)
BOOL reply_is_nil(STRING db)
BOOL reply_is_status(STRING db)
BOOL reply_is_integer(STRING db)
BOOL reply_is_boolean(STRING db)
BOOL reply_is_double(STRING db)
BOOL reply_is_string(STRING db)
BOOL reply_is_array(STRING db)
STRING get_reply(STRING db)
STRING get_error_reply(STRING db)
STRING get_status_reply(STRING db)
INT get_integer_reply(STRING db)
BOOL get_boolean_reply(STRING db)
REAL get_double_reply(STRING db)
STRING get_string_reply(STRING db)
INT get_array_reply_length(STRING db)
BOOL array_reply_is_error(INT index, STRING db)
BOOL array_reply_is_nil(INT index, STRING db)
BOOL array_reply_is_status(INT index, STRING db)
BOOL array_reply_is_integer(INT index, STRING db)
BOOL array_reply_is_boolean(INT index, STRING db)
BOOL array_reply_is_double(INT index, STRING db)
BOOL array_reply_is_string(INT index, STRING db)
BOOL array_reply_is_array(INT index, STRING db)
STRING get_array_reply_value(INT index, STRING db)
VOID free(STRING db)
STRING stats(ENUM format, BOOL stream, STRING prometheus_name_prefix, BOOL prometheus_default_labels, STRING prometheus_extra_labels, STRING db)
INT counter(STRING name, STRING db)
new xdb = redis.db(STRING location, ENUM type, INT connection_timeout, INT connection_ttl, INT command_timeout, INT max_command_retries, BOOL shared_connections, INT max_connections, ENUM protocol, BOOL tls, STRING tls_cafile, STRING tls_capath, STRING tls_certfile, STRING tls_keyfile, STRING tls_sni, STRING user, STRING password, INT sickness_ttl, BOOL ignore_slaves, INT max_cluster_hops)
VOID xdb.add_server(STRING location, ENUM type)
VOID xdb.command(STRING name)
VOID xdb.timeout(INT command_timeout)
VOID xdb.retries(INT max_command_retries)
VOID xdb.push(STRING arg)
VOID xdb.execute(BOOL master)
VOID xdb.easy_execute(STRING command, [STRING cmd_arg1], [STRING cmd_arg2], [STRING cmd_arg3], [STRING cmd_arg4], [STRING cmd_arg5], [STRING cmd_arg6], [STRING cmd_arg7], [STRING cmd_arg8], [STRING cmd_arg9], [STRING cmd_arg10], [STRING cmd_arg11], [STRING cmd_arg12], [STRING cmd_arg13], [STRING cmd_arg14], [STRING cmd_arg15], [STRING cmd_arg16], [INT timeout], [INT retries], BOOL master)
BOOL xdb.replied()
BOOL xdb.reply_is_error()
BOOL xdb.reply_is_nil()
BOOL xdb.reply_is_status()
BOOL xdb.reply_is_integer()
BOOL xdb.reply_is_boolean()
BOOL xdb.reply_is_double()
BOOL xdb.reply_is_string()
BOOL xdb.reply_is_array()
STRING xdb.get_reply()
STRING xdb.get_error_reply()
STRING xdb.get_status_reply()
INT xdb.get_integer_reply()
BOOL xdb.get_boolean_reply()
REAL xdb.get_double_reply()
STRING xdb.get_string_reply()
INT xdb.get_array_reply_length()
BOOL xdb.array_reply_is_error(INT index)
BOOL xdb.array_reply_is_nil(INT index)
BOOL xdb.array_reply_is_status(INT index)
BOOL xdb.array_reply_is_integer(INT index)
BOOL xdb.array_reply_is_boolean(INT index)
BOOL xdb.array_reply_is_double(INT index)
BOOL xdb.array_reply_is_string(INT index)
BOOL xdb.array_reply_is_array(INT index)
STRING xdb.get_array_reply_value(INT index)
VOID xdb.free()
STRING xdb.stats(ENUM format, BOOL stream, STRING prometheus_name_prefix, BOOL prometheus_default_labels, STRING prometheus_extra_labels)
INT xdb.counter(STRING name)
DESCRIPTION
VMOD using the synchronous hiredis library API to access Redis servers from VCL.
VOID subnets(STRING masks="")
Arguments
subnets:
Comma-delimited list of weights + subnet masks used to select among servers associated to a
database instance when executing commands. Order is relevant. Only IPv4 addresses are
supported. If not provided, value in the VMOD_REDIS_SUBNETS environment variable will be
used.
This is useful in setups using Redis instances deployed across multiple data centers or
availability zones.
Description
Using this function is not mandatory. If used, it must be called during vcl_init before creating
any database instance. If a database instance has already been created calls to this function are
silently ignored.
VOID sentinels(STRING locations, INT period, INT connection_timeout, INT command_timeout, ENUM protocol, BOOL
tls, STRING tls_cafile, STRING tls_capath, STRING tls_certfile, STRING tls_keyfile, STRING tls_sni,
STRING password)
VOID sentinels(
STRING locations="",
INT period=60,
INT connection_timeout=500,
INT command_timeout=0,
ENUM {RESP2, RESP3, default} protocol=default,
BOOL tls=0,
STRING tls_cafile="",
STRING tls_capath="",
STRING tls_certfile="",
STRING tls_keyfile="",
STRING tls_sni="",
STRING password=""
)
Arguments
locations:
Comma-delimited list of Redis Sentinel servers. Only host (IP or DNS name) + port format is
allowed. If not provided, value in the VMOD_REDIS_SENTINELS environment variable will be
used.
This is useful in setups using non-clustered Redis instances in order to (1) keep roles
(i.e. master / slave) updated; and (2) decrease priority of unreachable servers when
creating execution plans. This is not designed for auto-discovery of Redis Servers.
period: how frequently (seconds) Redis Sentinel periodical checks are executed (0 means disabling
periodical checks). Beware (1) proactive checks are also executed anytime the VCL state is changed
to warm; and (2) Sentinel Pub/Sub events are listened and processed even when periodical checks
are disabled.
connection_timeout: connection timeout (milliseconds; 0 means no timeout) to the Redis Sentinel
servers.
command_timeout: command timeout (milliseconds; 0 means no timeout) when executing Redis Sentinel
commands.
protocol: protocol to be used when talking to Redis Sentinel servers. Beware switching from RESP2
to RESP3 is only possible since Redis 6.0 and it uses an additional HELLO command when creating
new Redis Sentinel connections. Be careful RESP3 support is only available since hiredis 0.15.0.
tsl: if enabled, TLS will be used when establishing connections.
tls_cafile: if not empty, this CA certificate file will be used to verify TLS connections.
tls_capath: if not empty, this will be the directory storing trusted CA certificates used to
verify TLS connections. If neither tls_cafile nor tls_capath are specified, the default
system-wide trusted root certs configuration will apply.
tls_certfile: if not empty, this certificate file will be used to authenticate TLS connections.
tls_keyfile: if not empty, this private key file will be used to authenticate TLS connections.
tls_sni: if not empty, this server name indication (i.e. SNI) will be used when establishing TLS
connections.
password: if not empty, requests for authentication using the AUTH command will be submitted when
creating new Redis Sentinel connections. This password will be used for all Redis Sentinel
servers.
Description
Using this function is not mandatory.
VOID use(STRING db)
Arguments
db: VCL name of the database instance.
Description
Sets the current database instance to be used by proxied methods (if none is specified with their
db argument).
VOID add_server(STRING location, ENUM type, STRING db)
VOID add_server(
STRING location,
ENUM {master, slave, auto, cluster} type,
STRING db=""
)
Description
Proxied version of .add_server().
VOID command(STRING name, STRING db="")
Description
Proxied version of .command().
VOID timeout(INT command_timeout, STRING db="")
Description
Proxied version of .timeout().
VOID retries(INT max_command_retries, STRING db="")
Description
Proxied version of .retries().
VOID push(STRING arg, STRING db="")
Description
Proxied version of .push().
VOID execute(BOOL master=1, STRING db="")
Description
Proxied version of .execute().
VOID easy_execute(STRING command, [STRING cmd_arg1], [STRING cmd_arg2], [STRING cmd_arg3], [STRING cmd_arg4],
[STRING cmd_arg5], [STRING cmd_arg6], [STRING cmd_arg7], [STRING cmd_arg8], [STRING cmd_arg9], [STRING
cmd_arg10], [STRING cmd_arg11], [STRING cmd_arg12], [STRING cmd_arg13], [STRING cmd_arg14], [STRING
cmd_arg15], [STRING cmd_arg16], [INT timeout], [INT retries], BOOL master, STRING db)
VOID easy_execute(
STRING command,
[STRING cmd_arg1],
[STRING cmd_arg2],
[STRING cmd_arg3],
[STRING cmd_arg4],
[STRING cmd_arg5],
[STRING cmd_arg6],
[STRING cmd_arg7],
[STRING cmd_arg8],
[STRING cmd_arg9],
[STRING cmd_arg10],
[STRING cmd_arg11],
[STRING cmd_arg12],
[STRING cmd_arg13],
[STRING cmd_arg14],
[STRING cmd_arg15],
[STRING cmd_arg16],
[INT timeout],
[INT retries],
BOOL master=1,
STRING db=""
)
Description
Proxied version of .easy_execute().
BOOL replied(STRING db="")
Description
Proxied version of .replied().
BOOL reply_is_error(STRING db="")
Description
Proxied version of .reply_is_error().
BOOL reply_is_nil(STRING db="")
Description
Proxied version of .reply_is_nil().
BOOL reply_is_status(STRING db="")
Description
Proxied version of .reply_is_status().
BOOL reply_is_integer(STRING db="")
Description
Proxied version of .reply_is_integer().
BOOL reply_is_boolean(STRING db="")
Description
Proxied version of .reply_is_boolean().
BOOL reply_is_double(STRING db="")
Description
Proxied version of .reply_is_double().
BOOL reply_is_string(STRING db="")
Description
Proxied version of .reply_is_string().
BOOL reply_is_array(STRING db="")
Description
Proxied version of .reply_is_array().
STRING get_reply(STRING db="")
Description
Proxied version of .get_reply().
STRING get_error_reply(STRING db="")
Description
Proxied version of .get_error_reply().
STRING get_status_reply(STRING db="")
Description
Proxied version of .get_status_reply().
INT get_integer_reply(STRING db="")
Description
Proxied version of .get_integer_reply().
BOOL get_boolean_reply(STRING db="")
Description
Proxied version of .get_boolean_reply().
REAL get_double_reply(STRING db="")
Description
Proxied version of .get_double_reply().
STRING get_string_reply(STRING db="")
Description
Proxied version of .get_string_reply().
INT get_array_reply_length(STRING db="")
Description
Proxied version of .get_array_reply_length().
BOOL array_reply_is_error(INT index, STRING db="")
Description
Proxied version of .array_reply_is_error().
BOOL array_reply_is_nil(INT index, STRING db="")
Description
Proxied version of .array_reply_is_nil().
BOOL array_reply_is_status(INT index, STRING db="")
Description
Proxied version of .array_reply_is_status().
BOOL array_reply_is_integer(INT index, STRING db="")
Description
Proxied version of .array_reply_is_integer().
BOOL array_reply_is_boolean(INT index, STRING db="")
Description
Proxied version of .array_reply_is_boolean().
BOOL array_reply_is_double(INT index, STRING db="")
Description
Proxied version of .array_reply_is_double().
BOOL array_reply_is_string(INT index, STRING db="")
Description
Proxied version of .array_reply_is_string().
BOOL array_reply_is_array(INT index, STRING db="")
Description
Proxied version of .array_reply_is_array().
STRING get_array_reply_value(INT index, STRING db="")
Description
Proxied version of .get_array_reply_value().
VOID free(STRING db="")
Description
Proxied version of .free().
STRING stats(ENUM format, BOOL stream, STRING prometheus_name_prefix, BOOL prometheus_default_labels, STRING
prometheus_extra_labels, STRING db)
STRING stats(
ENUM {json, prometheus} format=json,
BOOL stream=0,
STRING prometheus_name_prefix="vmod_redis_",
BOOL prometheus_default_labels=1,
STRING prometheus_extra_labels="",
STRING db=""
)
Description
Proxied version of .stats().
INT counter(STRING name, STRING db="")
Description
Proxied version of .counter().
new xdb = redis.db(STRING location, ENUM type, INT connection_timeout, INT connection_ttl, INT
command_timeout, INT max_command_retries, BOOL shared_connections, INT max_connections, ENUM protocol,
BOOL tls, STRING tls_cafile, STRING tls_capath, STRING tls_certfile, STRING tls_keyfile, STRING tls_sni,
STRING user, STRING password, INT sickness_ttl, BOOL ignore_slaves, INT max_cluster_hops)
new xdb = redis.db(
STRING location="",
ENUM {master, slave, auto, cluster} type=auto,
INT connection_timeout=1000,
INT connection_ttl=0,
INT command_timeout=0,
INT max_command_retries=0,
BOOL shared_connections=1,
INT max_connections=128,
ENUM {RESP2, RESP3, default} protocol=default,
BOOL tls=0,
STRING tls_cafile="",
STRING tls_capath="",
STRING tls_certfile="",
STRING tls_keyfile="",
STRING tls_sni="",
STRING user="",
STRING password="",
INT sickness_ttl=60,
BOOL ignore_slaves=0,
INT max_cluster_hops=32
)
Arguments
location: Redis connection string. Both host (IP or DNS name) + port and UNIX sockets are
supported. Only the IP + port format is allowed when Redis Cluster support is enabled. Do not use
DNS names in combination with ``redis.subnets()`` or ``redis.sentinels()``.
type: type of the Redis server referenced by location:
• The auto value enables automatic discovery of the current role of the server on bootstrap time
using the ROLE command.
• The cluster value enables Redis Cluster support, automatically discovering other servers in the
cluster and their roles on demand using the CLUSTER SLOTS command.
connection_timeout: connection timeout (milliseconds; 0 means no timeout) to the Redis server.
connection_ttl: TTL (seconds) of Redis connections (0 means no TTL). Once the TTL of a connection
is consumed, the module transparently reestablishes it. See "Client timeouts" in
http://redis.io/topics/clients for extra information.
command_timeout: command timeout (milliseconds; 0 means no timeout) when executing a Redis
command. It can be overridden during command execution with .timeout().
max_command_retries: number of retries to be executed after a failed command execution. It can be
overridden during command execution with .retries().
shared_connections: if enabled, Redis connections are not local to Varnish worker threads, but
shared by all threads using one or more pools.
max_connections:
When shared_connections is enabled, the VMOD creates one pool of Redis connections per
location and database instance. This option sets the maximum number of connections in each
pool. All Varnish worker threads using the same database instance will share connections in
these pools. Pools are not shared between database instances.
Note that when Redis Cluster support is enabled for a database, each server is the cluster
is internally labeled by the VMOD with its location (IP + port).
When shared_connections is disabled, Redis connections are local to each Varnish worker
thread. This option sets the maximum number of Redis connections per Varnish worker thread.
Each thread keeps up to one connection per location and database instance. If more than one
(database, location) pair is available, incrementing this limit allows recycling of Redis
connections.
WARNING: when creating multiple database instances, always use the same value in all
instances using private connections. Otherwise you may experience inconsistent behavior.
protocol: protocol to be used when talking to Redis Server servers. Beware switching from RESP2 to
RESP3 is only possible since Redis 6.0 and it affects to type conversion rules. Be careful RESP3
support is only available since hiredis 0.15.0.
tsl: if enabled, TLS will be used when establishing connections.
tls_cafile: if not empty, this CA certificate file will be used to verify TLS connections.
tls_capath: if not empty, this will be the directory storing trusted CA certificates used to
verify TLS connections. If neither tls_cafile nor tls_capath are specified, the default
system-wide trusted root certs configuration will apply.
tls_certfile: if not empty, this certificate file will be used to authenticate TLS connections.
tls_keyfile: if not empty, this private key file will be used to authenticate TLS connections.
tls_sni: if not empty, this server name indication (i.e. SNI) will be used when establishing TLS
connections.
user: if not empty and a password is provided, requests for authentication using the AUTH or HELLO
command will include both the user name and its password. That enables usage of the Redis ACL
system, available since Redis 6.0.
password: if not empty, requests for authentication using the AUTH or HELLO command will be
submitted when creating new Redis connections. This password will be used for all Redis servers,
including discovered servers when Redis Cluster support is enabled.
sickness_ttl: TTL (seconds) of the sickness flag (0 means no sickness flags) associated to a Redis
server. Once a server is flagged as sick and while the flag is not expired the module will lazily
drop existing connections to that server and it will try to avoid it as much as possible when
creating execution plans. This TTL is overridden when Redis Sentinel servers are configured and
some Sentinel discovers an unreachable server.
ignore_slaves: if enabled, slave servers are not considered when executing commands. In other
words, enabling this option implicitly forces master == true when using the .execute() method.
max_cluster_hops: maximum number of redirections (0 means no limit) when executing a command and
Redis Cluster support has been enabled.
Description
Creates a new database instance.
VOID xdb.add_server(STRING location, ENUM type)
VOID xdb.add_server(
STRING location,
ENUM {master, slave, auto, cluster} type
)
Arguments
location: Redis connection string. Both host (IP or DNS name) + port and UNIX sockets are
supported. If Redis Cluster support has been enabled only the IP + port format is allowed. Do not
use DNS names in combination with ``redis.subnets()`` or ``redis.sentinels()``.
type: type of the Redis server referenced by location:
• The auto value enables automatic discovery of the current role of the server on bootstrap time
using the ROLE command.
• If Redis Cluster support has been enabled cluster is the only allowed value.
Description
Adds an extra Redis server.
If Redis Cluster support has been enabled other servers in the cluster and their roles are
automatically discovered by the VMOD using the CLUSTER SLOTS command. In any case, knowing more
cluster servers during startup increases the chances of discover the cluster topology if some
server is failing.
VOID xdb.command(STRING name)
Arguments
name: name of the Redis command to be executed.
Description
Enqueues a Redis command (only the name of the command) for further execution. Arguments should be
enqueued separately calling one or more times to the .push() method.
On execution time, EVAL commands are internally replace by EVALSHA commands, which fallback to the
original EVAL command if the Redis server returns a NOSCRIPT error (see
http://redis.io/commands/eval).
VOID xdb.timeout(INT command_timeout)
Arguments
command_timeout: command timeout (milliseconds; 0 means no timeout) to be used when executing a
specific Redis command.
Description
Allows overriding the default command timeout provided when calling .db().
VOID xdb.retries(INT max_command_retries)
Arguments
max_command_retries: number of retries to be executed after a failed command execution.
Description
Allows overriding the default number of retries provided when calling .db().
VOID xdb.push(STRING arg)
Arguments
arg: argument of a previously enqueued Redis command.
Description
Provides an argument to a previously enqueued Redis command.
VOID xdb.execute(BOOL master=1)
Arguments
master: when enabled slave servers are not considered for execution.
Return value
VOID
Description
Executes a previously enqueued Redis command.
When more than one Redis server is available, the destination server is selected according with
master and with the list of weights + subnet masks provided when calling redis.subnets().
WARNING: allowing execution of commands in slave servers (i.e. master == false) must be carefully
used:
• When Redis Cluster support is disabled, sending a read-write command to a read-only slave server
will result in an error reply.
• It's safe to send read-only LUA scripts using EVAL or EVALSHA commands to a read-only slave
server when Redis Cluster support is disabled. Being a read-only slave server does not block
writes in the script cache.
• When Redis Cluster support is enabled, sending a read-write command to a slave server will
result in a redirection to the right master server. This kind of redirections trigger an
internal rediscovery of the cluster topology. The client side won't notice the redirection, but
triggering such an expensive operation on every command is a terrible idea.
• It's not safe to send read-only LUA scripts using ``EVAL`` or ``EVALSHA`` commands to a slave
server when Redis Cluster support is enabled. Redis Cluster handles EVAL and EVALSHA1 command as
write operations that must be redirected to a master server. Therefore, this would result on a
rediscovery of the cluster topology on every command execution. The VMOD internally forces
master == true when Redis Cluster support is enabled and EVAL or EVALSHA command are submitted
in order to avoid this counterintuitive scenario.
VOID xdb.easy_execute(STRING command, [STRING cmd_arg1], [STRING cmd_arg2], [STRING cmd_arg3], [STRING
cmd_arg4], [STRING cmd_arg5], [STRING cmd_arg6], [STRING cmd_arg7], [STRING cmd_arg8], [STRING cmd_arg9],
[STRING cmd_arg10], [STRING cmd_arg11], [STRING cmd_arg12], [STRING cmd_arg13], [STRING cmd_arg14],
[STRING cmd_arg15], [STRING cmd_arg16], [INT timeout], [INT retries], BOOL master)
VOID xdb.easy_execute(
STRING command,
[STRING cmd_arg1],
[STRING cmd_arg2],
[STRING cmd_arg3],
[STRING cmd_arg4],
[STRING cmd_arg5],
[STRING cmd_arg6],
[STRING cmd_arg7],
[STRING cmd_arg8],
[STRING cmd_arg9],
[STRING cmd_arg10],
[STRING cmd_arg11],
[STRING cmd_arg12],
[STRING cmd_arg13],
[STRING cmd_arg14],
[STRING cmd_arg15],
[STRING cmd_arg16],
[INT timeout],
[INT retries],
BOOL master=1
)
Arguments
The command argument is mandatory, followed with up to 16 arguments, optionally ending with
timeout (as passed to .timeout()) and/or retries (as passed to .retries()) and/or master
(.execute()). For example: db.easy_command("set", "foo", "hello", retries=3, master=true);
Return value
VOID
Description
Equivalent to calling, .command(), .push() (possibly multiple times), .timeout(), .retries() then
finally .execute() using a single command.
BOOL xdb.replied()
Return value
TRUE if a previously executed Redis command using .execute() returned any reply. Not returning a
reply usually means a failed connection, a connection timeout, etc.
BOOL xdb.reply_is_error()
Return value
TRUE if a previously executed Redis command using .execute() returned an error reply.
BOOL xdb.reply_is_nil()
Return value
TRUE if a previously executed Redis command using .execute() returned a nil reply.
BOOL xdb.reply_is_status()
Return value
TRUE if a previously executed Redis command using .execute() returned a status reply.
BOOL xdb.reply_is_integer()
Return value
TRUE if a previously executed Redis command .execute() returned an integer reply.
BOOL xdb.reply_is_boolean()
Return value
TRUE if a previously executed Redis command .execute() returned an boolean reply.
BOOL xdb.reply_is_double()
Return value
TRUE if a previously executed Redis command .execute() returned an double reply.
BOOL xdb.reply_is_string()
Return value
TRUE if a previously executed Redis command .execute() returned a string or verbatim reply.
BOOL xdb.reply_is_array()
Return value
TRUE if a previously executed Redis command using .execute() returned an array, map or set reply.
STRING xdb.get_reply()
Return value
A string representation of the reply of a previously executed Redis command using .execute().
Description
Do not use this function to access to array, map or set replies.
STRING xdb.get_error_reply()
Return value
If a previously executed Redis command using .execute() returned an error reply, this function
returns a string representation of that reply.
STRING xdb.get_status_reply()
Return value
If a previously executed Redis command using .execute() returned a status reply, this function
returns a string representation of that reply.
INT xdb.get_integer_reply()
Return value
If a previously executed Redis command using .execute() returned an integer reply, this function
returns an integer representation of that reply.
BOOL xdb.get_boolean_reply()
Return value
If a previously executed Redis command using .execute() returned an boolean reply, this function
returns an boolean representation of that reply.
REAL xdb.get_double_reply()
Return value
If a previously executed Redis command using .execute() returned an double reply, this function
returns an double representation of that reply.
STRING xdb.get_string_reply()
Return value
If a previously executed Redis command using .execute() returned a string or verbatim reply, this
function returns a string representation of that reply.
INT xdb.get_array_reply_length()
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns the number of elements in that reply.
BOOL xdb.array_reply_is_error(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns TRUE if the nth element in that reply is an error reply (nested responses are not
supported).
BOOL xdb.array_reply_is_nil(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns TRUE if the nth element in that reply is a nil reply (nested responses are not
supported).
BOOL xdb.array_reply_is_status(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns TRUE if the nth element in that reply is a status reply (nested responses are not
supported).
BOOL xdb.array_reply_is_integer(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns TRUE if the nth element in that reply is an integer reply (nested responses are
not supported).
BOOL xdb.array_reply_is_boolean(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns TRUE if the nth element in that reply is an boolean reply (nested responses are
not supported).
BOOL xdb.array_reply_is_double(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns TRUE if the nth element in that reply is an double reply (nested responses are
not supported).
BOOL xdb.array_reply_is_string(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns TRUE if the nth element in that reply is a string or verbatim reply (nested
responses are not supported).
BOOL xdb.array_reply_is_array(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns TRUE if the nth element in that reply is an array, map or set reply (nested
responses are not supported).
STRING xdb.get_array_reply_value(INT index)
Arguments
index: index in the array reply.
Return value
If a previously executed Redis command using .execute() returned an array, map or set reply, this
function returns a string representation of the nth element in that reply (nested responses are
not supported).
VOID xdb.free()
Description
Frees memory internally used by Redis commands an replies. It's recommended to use this function,
but if not called this will be handled automatically during the next call to .command() using the
same object.
STRING xdb.stats(ENUM format, BOOL stream, STRING prometheus_name_prefix, BOOL prometheus_default_labels,
STRING prometheus_extra_labels)
STRING xdb.stats(
ENUM {json, prometheus} format=json,
BOOL stream=0,
STRING prometheus_name_prefix="vmod_redis_",
BOOL prometheus_default_labels=1,
STRING prometheus_extra_labels=""
)
Arguments
format: format of the output string.
stream: if enabled, the response object will be streamed as a synthetic response.
prometheus_name_prefix: prefix to be used in all Prometheus metric names. It's used as a raw
value; no validations or transformations at all.
prometheus_default_labels: if enabled, some default Prometheus labels will be added to all stats.
prometheus_extra_labels: extra Prometheus labels to be added to all stats. It's used as a raw
value; no validations or transformations at all.
Description
Returns internal stats represented as a string.
If called during vcl_synth or vcl_backend_error with the stream argument enabled, this function
will return an empty string and behave as a call to the synthetic VCL function with the response
object as input. This highly reduces the amount of required workspace memory.
INT xdb.counter(STRING name)
Arguments
name: name of the counter.
Description
Returns internal counter.
COPYRIGHT
Copyright (c) Carlos Abalde <carlos.abalde@gmail.com> You're free to use and distribute this under terms in the LICENSE file. VMOD_REDIS(3)