Memcached CLIENT_ERROR key too long

The key exceeds the maximum allowed length.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Stuck? Let AI directly find root cause
AI that integrates with your stack & debugs automatically | Runs locally and privately
Download Now
What is

Memcached CLIENT_ERROR key too long

 ?

Understanding Memcached

Memcached is a high-performance, distributed memory object caching system, primarily used to speed up dynamic web applications by alleviating database load. It stores data in memory for quick retrieval, making it an essential tool for improving application performance and scalability.

Identifying the Symptom

When working with Memcached, you might encounter the error message: CLIENT_ERROR key too long. This error indicates a problem with the key length used in your Memcached operations.

What You Observe

During a Memcached operation, such as a set or get command, the operation fails, and the error message CLIENT_ERROR key too long is returned. This prevents the successful storage or retrieval of data.

Details About the Issue

The error CLIENT_ERROR key too long occurs when the key used in a Memcached operation exceeds the maximum allowed length. Memcached enforces a strict limit of 250 characters for keys. This limit is in place to ensure efficient memory usage and performance.

Why Key Length Matters

Keys in Memcached are used to uniquely identify cached data. Longer keys can lead to increased memory usage and slower performance, which is why Memcached imposes a limit. Exceeding this limit results in the CLIENT_ERROR key too long error.

Steps to Fix the Issue

To resolve the CLIENT_ERROR key too long issue, you need to ensure that all keys used in Memcached operations are within the 250-character limit. Here are the steps to achieve this:

Review Your Key Generation Logic

  • Examine the logic used to generate keys in your application. Ensure that keys are concise and meaningful, avoiding unnecessary characters.
  • Consider using a hashing function to generate shorter keys if your current keys are derived from lengthy strings.

Implement Key Length Checks

  • Before performing any Memcached operation, implement a check to ensure the key length does not exceed 250 characters.
  • Use a simple conditional statement in your code to validate key lengths.

Test Your Changes

  • After making changes to your key generation logic, thoroughly test your application to ensure that the error is resolved and that all Memcached operations function correctly.
  • Use tools like Memcached commands to verify operations.

Additional Resources

For more information on Memcached and best practices, consider visiting the following resources:

Attached error: 
Memcached CLIENT_ERROR key too long
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Memcached

80+ monitoring tool integrations
Long term memory about your stack
Locally run Mac App available

Thank you for your submission

We have sent the cheatsheet on your email!
Oops! Something went wrong while submitting the form.
Read more
Time to stop copy pasting your errors onto Google!

Memcached

80+ monitoring tool integrations
Long term memory about your stack
Locally run Mac App available

Thankyou for your submission

We have sent the cheatsheet on your email!
Oops! Something went wrong while submitting the form.

Thank you for your submission

We have sent the cheatsheet on your email!
Oops! Something went wrong while submitting the form.
Read more
Time to stop copy pasting your errors onto Google!

MORE ISSUES

Memcached SERVER_ERROR failed to initialize storage engine
The server failed to initialize the storage engine.
Memcached CLIENT_ERROR invalid server address
The server address provided is not valid.
Memcached SERVER_ERROR failed to initialize backup
The server failed to initialize backup settings.
Memcached CLIENT_ERROR invalid compression
The compression settings provided are not valid.
Memcached SERVER_ERROR failed to initialize replication
The server failed to initialize replication settings.
Memcached CLIENT_ERROR invalid authentication
The authentication credentials provided are not valid.
Memcached CLIENT_ERROR invalid port number
The port number provided is not valid.
Memcached SERVER_ERROR failed to initialize thread pool
The server failed to initialize the thread pool.
Memcached SERVER_ERROR failed to initialize event handler
The server failed to initialize the event handler.
Memcached CLIENT_ERROR invalid connection
The connection to the server is not valid.
Memcached CLIENT_ERROR invalid request
The request sent is not valid.
Memcached SERVER_ERROR failed to initialize logger
The server failed to initialize logging settings.
Memcached SERVER_ERROR failed to initialize cache
The server failed to initialize the cache.
Memcached SERVER_ERROR failed to initialize network
The server failed to initialize network settings.
Memcached SERVER_ERROR failed to initialize memory
The server failed to initialize memory settings.
Memcached CLIENT_ERROR invalid response
The response received is not valid.
Memcached CLIENT_ERROR invalid command length
The command length exceeds the maximum allowed size.
Memcached CLIENT_ERROR invalid data type
The data type provided is not valid.
Memcached CLIENT_ERROR key too long
The key exceeds the maximum allowed length.
Memcached SERVER_ERROR failed to unlock mutex
The server failed to release a mutex lock.
Memcached CLIENT_ERROR invalid protocol
The protocol specified is not supported.
Memcached SERVER_ERROR failed to lock mutex
The server failed to acquire a mutex lock.
Memcached CLIENT_ERROR invalid value
The value provided is not valid.
Memcached CLIENT_ERROR invalid key
The key provided is not valid.
Memcached SERVER_ERROR failed to allocate buffer
The server failed to allocate a buffer for an operation.
Memcached SERVER_ERROR failed to parse command
The server failed to parse the command.
Memcached CLIENT_ERROR invalid command
The command sent is not valid.
Memcached SERVER_ERROR failed to write to socket
The server encountered an error writing to a socket.
Memcached SERVER_ERROR failed to initialize thread
The server failed to initialize a new thread.
Memcached CLIENT_ERROR invalid cas value
The CAS value provided is invalid.
Memcached CLIENT_ERROR invalid flags
The flags provided are not valid.
Memcached SERVER_ERROR failed to read from socket
The server encountered an error reading from a socket.
Memcached SERVER_ERROR failed to set socket options
The server failed to configure socket options.
Memcached CLIENT_ERROR value too large
The value exceeds the maximum allowed size.
Memcached CLIENT_ERROR invalid expiration time
The expiration time provided is invalid.
Memcached SERVER_ERROR failed to fork process
The server failed to create a new process.
Memcached SERVER_ERROR failed to allocate memory
The server failed to allocate memory for an operation.
Memcached CLIENT_ERROR key not found
The specified key does not exist in the cache.
Memcached SERVER_ERROR too many open connections
The server has reached the maximum number of allowed connections.
Memcached CLIENT_ERROR unknown command
The command sent is not recognized by Memcached.
Memcached CLIENT_ERROR incomplete command
The command sent to Memcached is incomplete.
Memcached SERVER_ERROR failed to listen on TCP port
Memcached cannot bind to the specified TCP port.
Memcached SERVER_ERROR failed to listen on UDP port
Memcached cannot bind to the specified UDP port.
Memcached SERVER_ERROR internal error
An unexpected internal error occurred in Memcached.
Memcached CLIENT_ERROR bad data chunk
The data sent to Memcached is corrupted or improperly formatted.
Memcached SERVER_ERROR out of memory
Memcached has run out of memory to store new items.
Memcached SERVER_ERROR connection timeout
The connection to the Memcached server timed out.
Memcached CLIENT_ERROR invalid arguments
The command arguments provided are invalid.
Memcached SERVER_ERROR object too large for cache
The item being stored exceeds the maximum size limit.
Memcached CLIENT_ERROR bad command line format
The command sent to Memcached is not formatted correctly.

Backed by

Resources

DocumentationFun For DevsBlog

Contact

Contact UsAbout UsCareersTerms and ConditionsPrivacy PolicyShipping & and Delivery PolicyCancellation & Refund Policy

Platform

AI OpsAlert Grouping & De-DuplicationPlayBooksKubernetes Bot

Connect

DiscordGithubLinkedInX (Twitter)
SOC 2 Type II
certifed
ISO 27001
certified
Deep Sea Tech Inc. — Made with ❤️ in Bangalore & San Francisco 🏢

Doctor Droid