Hello all,
If the data returned from redis is of type
array, and if I want to iterate through all the elements in
the array, then I have to get $redis(r=>value[x]) for each
element, and a pseudo variable for each element is allocated
in the memory, is that correct?
Regards,
Hello all,
I’m using the following Lua script to fetch
data from Redis, which is in form of list:
function split(str, delimiter)
for token in string.gmatch(str, "[^"
.. delimiter .. "]+") do
return token
end
end
function contains(mainString, subString)
return string.find(mainString,
subString, 1, true) ~= nil
end
function longest_match_acode()
local currentSeconds =
os.time()
local milliseconds =
os.clock() * 1000
local ddate =
os.date("%Y-%m-%d %H:%M:%S", currentSeconds) ..
string.format(".%03d", milliseconds)
KSR.xlog.xinfo("starting
date:" ..ddate)
local size = 0
local result
local acode = "29192"
local inputbcode =
"4474173"
local delimiter = ":"
while size == 0 do
local
currentSeconds = os.time()
acode =
string.sub(acode, 1, string.len(acode) - 1)
KSR.ndb_redis.redis_cmd("srvN", "LRANGE price:" .. acode .."
0 -1", "r")
size =
tonumber(KSR.pv.get("$redis(r=>size)"))
end
local left = 0
local right = size - 1
while left <= right
do
local currentSeconds
= os.time()
local milliseconds = os.clock()
* 1000
local ddate = os.date("%Y-%m-%d
%H:%M:%S", currentSeconds) .. string.format(".%03d",
milliseconds)
resultRight = tostring(KSR.pv.get("$redis(r=>value[" ..
right .. "])"))
resultLeft = tostring(KSR.pv.get("$redis(r=>value[" ..
left .. "])"))
local
bcodeLeft = split(resultLeft, delimiter)
local
bcodeRight = split(resultRight, delimiter)
if
contains(inputbcode, bcodeRight) then
KSR.xlog.xinfo("Input bcode contains bcode value from Redis:
" .. resultRight .. " at index: " .. right .. " with date: "
.. ddate)
end
if
contains(inputbcode, bcodeLeft) then
KSR.xlog.xinfo("Input bcode contains bcode value from Redis:
" .. resultLeft .. " at index: " .. left .. " with date: "
.. ddate)
end
left =
left + 1
right =
right - 1
end
local currentSeconds =
os.time()
local milliseconds =
os.clock() * 1000
local ddate =
os.date("%Y-%m-%d %H:%M:%S", currentSeconds) ..
string.format(".%03d", milliseconds)
KSR.xlog.xinfo("ending
date:" ..ddate)
end
function ksr_request_route()
if KSR.is_INVITE() then
longest_match_acode()
KSR.sl.send_reply("404", "Not
found");
end
end
I’m getting the following warning in the
log :
WARNING: LUA {INVITE}: <core> [core/pvapi.c:340]:
pv_cache_add(): pv cache limit is going to be exceeded -
pkg memory may get filled with pv declarations
I think the issue is in the following
lines:
resultRight =
tostring(KSR.pv.get("$redis(r=>value[" .. right .. "])"))
resultLeft =
tostring(KSR.pv.get("$redis(r=>value[" .. left .. "])"))
the list coming from Redis has around 30k
items, which I’m iterating through using value[x] which is
exhausting the pv declaration as per my understanding.
How to overcome this issue? Is it possible
to save the list as an array variable and then iterate through
that array?
Regards,