x.create("Dinesh", 25)
#to create a key with key_name,value given and with no time-to-live property
x.create("Amrita", 70, 3600)
#to create a key with key_name,value given and with time-to-live property value given(number of seconds)
x.read("Dinesh")
#it returns the value of the respective key in Jasonobject format 'key_name:value'
x.read("Amrita")
#it returns the value of the respective key in Jasonobject format if the TIME-TO-LIVE IS NOT EXPIRED else it returns an ERROR
x.create("Dinesh", 50)
#it returns an ERROR since the key_name already exists in the database
x.modify("Dinesh", 55)
#it replaces the initial value of the respective key with new value
x.delete("Dinesh")
#it deletes the respective key and its value from the database(memory is also freed)
#we can access these using multiple threads like
t1 = Thread(target=(create or read or delete),
args=(key_name, value, timeout)) #as per the operation
t1.start()
t1.sleep()
t2 = Thread(target=(create or read or delete),
args=(key_name, value, timeout)) #as per the operation
t2.start()
t2.sleep()
#and so on upto tn
import code as x
x.create("abcdef", 25)
x.create("ski", 70, 3600) #create a key with key_name
x.read("abcdef") #returns the value of key_name
x.read("ski")
#returns the value of the respective key in Jasonobject
x.create("abcdef", 50)
x.modify("abcdef",
55) #replaces the initial value of the respective key with new value
x.delete("abcdef")
t1 = Thread(target=(create or read or delete), args=(key_name, value, timeout))
t1.start()
t1.sleep()
t2 = Thread(target=(create or read or delete), args=(key_name, value, timeout))
t2.start()
t2.sleep()
x.create("Sulthan", 60, 3600)
#to create a key with key_name,value given and with time-to-live property value given(number of seconds)
x.read("Tippu")
#it returns the value of the respective key in Jasonobject format 'key_name:value'
x.read("Sulthan")
#it returns the value of the respective key in Jasonobject format if the TIME-TO-LIVE IS NOT EXPIRED else it returns an ERROR
x.create("Tippu", 75)
#it returns an ERROR since the key_name already exists in the database
#To overcome this error
#either use modify operation to change the value of a key
#or use delete operation and recreate it
x.modify("Tippu", 55)
#it replaces the initial value of the respective key with new value
x.delete("Tippu")
#it deletes the respective key and its value from the database(memory is also freed)
#we can access these using multiple threads like
t1 = Thread(target=(create or read or delete),
args=(key_name, value, timeout)) #as per the operation
t1.start()
t1.sleep()
t2 = Thread(target=(create or read or delete),
args=(key_name, value, timeout)) #as per the operation
t2.start()
t2.sleep()
#and so on upto tn
import code as x
import threading as Thread
_db_lock=Thread.Lock()
x.create("rani",50)
x.create("src",70,3600)
x.read("rani")
x.read("src")
x.create("rani",70)
x.modify("rani",75)
x.delete("rani")
t1=Thread(target=(create or read or delete),args=(key_name,value,timeout))
t1.start()
t1.sleep()
t2=Thread(target=(create or read or delete),args=(key_name,value,timeout))
t2.start()
t2.sleep()
"has expired") #error message5
else:
if key not in d:
print(
"error: given key does not exist in database. Please enter a valid key"
) #error message6
else:
l = []
l.append(value)
l.append(b[1])
d[key] = l
while (1):
print("choose one operation: 1.create 2.read 3.modify 4.delete")
n = int(input())
if (n == 1):
input1 = input("enter the key ")
value = int(input("enter the vaue "))
x.create(input1, value)
elif (n == 2):
input2 = input("enter the key ")
print(x.read(input2))
elif (n == 3):
input3 = input("enter the key ")
value1 = int(input("enter the value "))
x.modify(input3, value1)
elif (n == 4):
input4 = input("enter the key ")
x.delete(input4)
x.create("src", 70, 3600)
#to create a key with key_name,value given and with time-to-live property value given(number of seconds)
x.read("Amrita")
#it returns the value of the respective key in Jasonobject format 'key_name:value'
x.read("src")
#it returns the value of the respective key in Jasonobject format if the TIME-TO-LIVE IS NOT EXPIRED else it returns an ERROR
x.create("Amrita", 50)
#it returns an ERROR since the key_name already exists in the database
#To overcome this error
#either use modify operation to change the value of a key
#or use delete operation and recreate it
x.modify("Amrita", 55)
#it replaces the initial value of the respective key with new value
x.delete("Amrita")
#it deletes the respective key and its value from the database(memory is also freed)
#we can access these using multiple threads like
t1 = Thread(target=(create or read or delete),
args=(key_name, value, timeout)) #as per the operation
t1.start()
t1.sleep()
t2 = Thread(target=(create or read or delete),
args=(key_name, value, timeout)) #as per the operation
t2.start()
t2.sleep()
#and so on upto tn
x.create("suyeb", 22)
# to create a key with key_name,value given and with time-to-live property value given(number of seconds)
x.read("suyeb")
# it returns the value of the respective key in Jasonobject format 'key_name:value'
x.read("vipin")
# it returns the value of the respective key in Jasonobject format if the TIME-TO-LIVE IS NOT EXPIRED else it returns an ERROR
x.create("vipin", 50)
# it returns an ERROR since the key_name already exists in the database
# To overcome this error
# either use modify operation to change the value of a key
# or use delete operation and recreate it
x.modify("suyeb", 55)
# it replaces the initial value of the respective key with new value
x.delete("vipin")
# it deletes the respective key and its value from the database(memory is also freed)
# we can access these using multiple threads like
x.is_empty()
# checking whether file has any data or not for which "is-empty" i used.
# and so on upto tn
# the code also returns other errors like
# "invalidkey" if key_length is greater than 32 or key_name contains any numeric,special characters etc.,
# "key doesnot exist" if key_name was mis-spelt or deleted earlier
