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Cache
Cache is a class found under PhalconCache directory. It helps in accessing frequently used data at much faster rate. PhalconCache is written in C Programming language and reduce overhead.
When to implement Cache?
- When we are frequently using complex calculations that returns the same result.
- When we are using many helpers and the output generated is always the same.
- When we are accessing database data constantly and its data rarely changes.
Caching process is divided into 2 parts:
1) Frontend: Frontend checks whether a key has expired or not. Also perform additional transformations to the data before storing and after retrieving them from the backend.
2) Backend: Backend part is responsible for communicating, reading or writing the data required by the frontend.
Implementation
Below code provide basic caching process for 2 days cache by implementing frontend and backend adapters.
Frontend Adapters
| Adapter | Description |
|---|---|
| PhalconCacheFrontendOutput | Read input data from standard PHP output. |
| PhalconCacheFrontendData | It is used to cache any kind of PHP data (big arrays, objects, text, etc). Data is serialized before stored in the backend. |
| PhalconCacheFrontendBase64 | It’s used to cache binary data. The data is serialized using base64_encode before be stored in the backend. |
| PhalconCacheFrontendJson | Data is encoded in JSON before be stored in the backend. Decoded after be retrieved. This frontend is useful to share data with other languages or frameworks. |
| PhalconCacheFrontendIgbinary | It is used to cache any kind of PHP data (big arrays, objects, text, etc). Data is serialized using Igbinary before be stored in the backend. |
| PhalconCacheBackendXcache | Stores data in XCache. |
| PhalconCacheBackendNone | It is used to cache any kind of PHP data without serializing them. |
Backend Adapters
| Adapter | Description | Info | Required Extension |
|---|---|---|---|
| PhalconCacheBackendApc | Stores data to the Alternative PHP Cache (APC). | APC | APC |
| PhalconCacheBackendApcu | Stores data to the APCu (APC without opcode caching) | APCu | APCu |
| PhalconCacheBackendFile | Stores data to local plain files | ||
| PhalconCacheBackendMongo | Stores data to Mongo Database. | MongoDB | MongoDB |
| PhalconCacheBackendRedis | Stores data in Redis | Redis | Redis |
| PhalconCacheBackendXcache | Stores data in XCache. | XCache | XCache |
| PhalconCacheBackendMemcache | Stores data to a memcached server. | Memcache | Memcache |
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