Developing A Memcached Application - Oracle 5.0 Reference Manual

>32 END
<32 set key 0 0 6
>32 STORED
<32 incr key 1
>32 789544
<32 decr key 1
>32 789543
<32 incr key 2
>32 789545
During client communication, for each line, the initial character shows the direction of flow of
the information. The < for communication from the client to the
communication back to the client. The number is the numeric socket descriptor for the connection.
• Output when using
This level of verbosity includes the transitions of connections between different states in the event
library while reading and writing content to/from the clients. It should be used to diagnose and
identify issues in client communication. For example, you can use this information to determine
if
memcached
operation or before returning and completing the operation. An example of the typical sequence for a
set operation is provided below:
<32 new auto-negotiating client connection
32: going from conn_new_cmd to conn_waiting
32: going from conn_waiting to conn_read
32: going from conn_read to conn_parse_cmd
32: Client using the ascii protocol
<32 set my_key 0 0 10
32: going from conn_parse_cmd to conn_nread
> NOT FOUND my_key
>32 STORED
32: going from conn_nread to conn_write
32: going from conn_write to conn_new_cmd
32: going from conn_new_cmd to conn_waiting
32: going from conn_waiting to conn_read
32: going from conn_read to conn_closing
<32 connection closed.
All of the verbosity levels in
issues. The quantity of information generated, particularly when using -vvv, is significant, particularly
on a busy server. Also be aware that writing the error information out, especially to disk, may negate
some of the performance gains you achieve by using memcached. Therefore, use in production or
deployment environments is not recommended.
15.6.3. Developing a
A number of language interfaces let applications store and retrieve information with
servers. You can write
Ruby, C, and Java.
Data stored into a
cache and retrieval from the cache using the key as the reference. The cache therefore operates
like a large associative array or hash table. It is not possible to structure or otherwise organize the
information stored in the cache. To emulate database notions such as multiple tables or composite
key values, you must use encode the extra information into the strings used as keys. For example, to
store or look up the address corresponding to a specific latitude and longitude, you might turn those
two numeric values into a single comma-separated string to use as a key.
15.6.3.1. Basic
memcached
The interface to
cache, and these are consistent across all the different APIs, although the language specific mechanics
might be different:
Developing a
-vvv
is taking a long time to return information to the client, during the read of the client
memcached
Application
memcached
applications in popular languages such as Perl, PHP, Python,
memcached
server is referred to by a single string (the key), with storage into the
memcached
Operations
supports the following methods for storing and retrieving information in the
memcached
Application
memcached
are designed to be used during debugging or examination of
1358
server and > for
memcached
memcached