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added readme importing/exporting entries to json

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Rob Austin
2014-12-05 09:11:35 +00:00
parent fc14f59cd6
commit 0dabc8e3b1
1 changed files with 17 additions and 16 deletions
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README.md
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@@ -39,8 +39,8 @@ Click here to get the [Latest Version Number](http://search.maven.org/#search%7C
* [Serialization](https://github.com/OpenHFT/Chronicle-Map#serialization)
* [Simple Types](https://github.com/OpenHFT/Chronicle-Map#simple-types)
* [Complex Types](https://github.com/OpenHFT/Chronicle-Map#complex-types)
* [Close](https://github.com/OpenHFT/Chronicle-Map#close)
* [Import/Export Entries as JSON](https://github.com/OpenHFT/Chronicle-Map#importexport-entries-as-json)
* [Close](https://github.com/OpenHFT/Chronicle-Map#close)
* [TCP / UDP Replication](https://github.com/OpenHFT/Chronicle-Map#tcp--udp-replication)
* [TCP / UDP Background.](https://github.com/OpenHFT/Chronicle-Map#tcp--udp-background)
* [How to setup UDP Replication](https://github.com/OpenHFT/Chronicle-Map#how-to-setup-udp-replication)
@@ -579,24 +579,9 @@ an example of how to do this can be found at "IntValue$$Native"
* alternatively, you could write a "Custom Marshaller", the custom marshaller can be implemented
for a single type or a number of types.
### Close
Unlike ConcurrentHashMap, chronicle map stores its data off heap, often in a memory mapped file.
Its recommended that you call close() once you have finished working with a Chronicle Map.
``` java
map.close()
```
You only need to close to clean up resources deterministically. If your program is exiting,
you don't need to close the collection, as Chronicle never knows when the program might crash,
so we have designed it so you don't have to close() it.
WARNING : If you call close too early before you have finished working with the map, this can cause
your JVM to crash. Close MUST BE the last thing that you do with the map.
### Import/Export Entries as JSON
![Import/Export](http://openhft.net/wp-content/uploads/2014/09/Export-import_04.jpg)
Chronicle Map supports importing and exporting all the entries into a JSON encoded file.
``` java
@@ -622,6 +607,22 @@ WARNING : The current version only supports Chronicle Maps that contained serial
VALUES, future versions will support a binary encoding of objects that are `net.openhft.lang.io
.serialization.BytesMarshallable`
## Close
Unlike ConcurrentHashMap, chronicle map stores its data off heap, often in a memory mapped file.
Its recommended that you call close() once you have finished working with a Chronicle Map.
``` java
map.close()
```
You only need to close to clean up resources deterministically. If your program is exiting,
you don't need to close the collection, as Chronicle never knows when the program might crash,
so we have designed it so you don't have to close() it.
WARNING : If you call close too early before you have finished working with the map, this can cause
your JVM to crash. Close MUST BE the last thing that you do with the map.
# TCP / UDP Replication
Chronicle Hash Map supports both TCP and UDP replication