NCache Management and Monitoring

NCache provides powerful management and monitoring tools for NCache that let you configure and monitor cache clusters and cache clients. These include web-based tools, command line tools, and integrations with third-party monitoring tools. NCache also offers logs and event viewers for viewing and monitoring runtime statistics of different components of NCache.

Management Center

The NCache Management Center is web-based and lets you perform all cache management and configuration tasks smoothly from a browser. It has a very easy-to-understand GUI for both Windows and Linux environments. You can access the NCache Management locally as well as remotely. The operations performed using the NCache Manager include:

• Cache/Cluster/Bridge Creation
• Addition/Removal of Clients or Servers
• Deployment of server-side providers
• General Cache Cluster Configurations
• Security and more

Monitor

The NCache Monitor is a web-based monitoring tool to monitor the cache's health and activities. It shows a report and graphical view for monitoring your client and server statistics. You can launch the NCache Monitor the same way as the Management Center for Windows and Linux, and it also monitors everything remotely. The core features of the NCache Monitor are:

• Server dashboard to monitor counters for servers in the cache cluster.
• Client dashboard to monitor counters for remote cache clients (web/app servers).
• Custom dashboard to create and customize your dashboard.
• Counters to monitor statistics such as cache health, operations per second, cache size, CPU usage, etc.

Command Line Tools

NCache provides all cache management operations through command-line tools as follows.

• Windows: PowerShell Cmdlets
• Linux: Command Line Tools

On Windows, NCache provides these tools as PowerShell Cmdlets while on Linux NCache provides regular command line tools. On both platforms, these command line tools are provided for automating cache and cluster management tasks. A few of the tools provided by NCache include:

• New-Cache/New-Bridge
• Remove-Cache/Remove-Bridge
• Clear-Cache

Windows Performance Monitor

The Windows Performance Monitor is a monitoring tool created by Microsoft for viewing real-time application statistics. NCache provides a rich set of performance monitoring counters, which you can select to view in the Windows Performance Monitor Tool. The following counters are provided by NCache:

• Cache Server Counters like State Transfer/sec and Updates/sec, etc.
• Cache Client Counters like fetches/sec and compression/sec, etc.
• Bridge Counters like bridge cache count and bridge cache size, etc.

SNMP Monitoring

SNMP (Simple Network Management Protocol) is a standard protocol through which different devices on a network communicate and share information. NCache supports monitoring this protocol's activity using its SNMP counters. You can read more about these SNMP Counters in the NCache Administrators Guide.

NCache provides a rich set of performance monitoring counters for SNMP, which you can select to view in any third-party monitoring tool that supports SNMP. The following counters are provided by NCache:

• Cache Server Counters like State Transfer/sec and Updates/sec, etc.
• Cache Client Counters like fetches/sec and compression/sec, etc.
• Bridge Counters like bridge cache count and bridge cache size, etc.

Windows Event Viewer

The Windows Event Viewer is a tool that shows a log of system messages - including errors, information messages, and warnings. NCache logs significant events in the Windows Event Viewer. It allows you to monitor the important events such as:

• NCache installation events.
• Errors encountered by NCache or Bridge services.
• Service/Cache start and stop.
• Cache server joining or leaving a cache cluster.
• Cache size going above a configurable 80% threshold.

Linux Event Log (/var/log)

Linux has a special directory for storing logs called /var/log. This directory contains logs from the OS itself, services, and various applications running on the system. NCache logs its events in /var/log style folder that you can then read. These include errors, information messages, and warnings.

NCache logs significant events in the /var/log file. This allows you to monitor the important events such as:

• NCache installation events.
• Errors encountered by NCache or Bridge services.
• Service/Cache start and stop.
• Cache server joining or leaving a cache cluster.
• Cache size going above a configurable 80% threshold.

Email Notifications on NCache Events

Along with other third-party monitoring tools, NCache can notify users about relevant events through email alerts. These email notifications concern significant events such as:

• Cache start or stop.
• Cache server joining or leaving the cache cluster.
• Cache state transfer start or completion.
• Cache size going above a configurable 80% threshold.

NCache Log Viewer

The NCache Log Viewer is an interactive GUI tool to display logs in an organized manner. This log viewer lets you maintain logs categorically, i.e., it allows separate field identification and customizes the search entries in a manner convenient for you. These logs show necessary information such as:

• Cache node where the operation takes place.
• Timestamp of the log.
• The process name and the name of the component.
• Thread name and log types.
• A message with detailed log information about the success/failure of operations.

Prometheus Monitoring

Prometheus is an open-source monitoring system that records real-time metrics in a time series database built using an HTTP pull model, with flexible queries and real-time alerting. NCache provides support for monitoring its performance counters through Prometheus. You can monitor Distributed Caches, Distributed Cache with Persistence, the Pub/Sub Messaging Store, Distributed Lucene, Clients, and Bridges through the extensive counters published by NCache.

Grafana Monitoring

Grafana is an open-source analytics and monitoring tool. NCache provides a Grafana Application Plugin that collects and displays NCache metrics data from your cluster on several feature-rich metrics dashboard using Prometheus as a data source.

Management and Monitoring API & Events

NCache provides a set of methods to perform simple management and monitoring operations on the cache. It saves you from using the NCache Manager or NCache PowerShell tools by managing them using the API.

Management and Monitoring API & Events

NCache provides the following API calls for the management of NCache.

• StartCache API: It lets you start the cache by providing the server cache name and node. It also allows you to enable security on the cache.
• StopCache API: It lets you stop the cache by providing the server cache name and node. It also allows stopping a cache with security enabled.

Monitoring API

Similar to management, NCache provides a monitoring API for monitoring the cache. The list of monitoring APIs includes:

• GetCacheHealth API: This method lets you view the connectivity status of cache server nodes by providing the cache name, server address, and port.
• ClientInfo API: It contains the client information of each client, such as ClientID, processID, AppName, etc.
• ConnectedClientList API: It gets you the list of all the clients connected to the cache.

Management Level Events

Management-level event notifications are events registered for management operations on the cache from your .NET or Java application. Notifications fire on the following management operations:

• Cache Clear: Whenever a cache is cleared.
• Cache Stop: Whenever a cache is stopped.
• Member Join: Whenever a node joins the cache cluster.
• Member Leave: Whenever a node leaves the cache cluster.

LINQPad Integration

LINQPad is a database querying software that employs LINQ, SQL, and other query languages without IDE's. NCache provides smooth integration with LINQPad, only requiring the addition of a reference to the NCache LINQPad provider and the custom objects you have stored in NCache. It lets you write your LINQ queries over the configured cache with LINQPad.

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