Ben Johnson, autorul stoc\u0103rii NoSQL BoltDB, a prezentat proiectul Litestream, care ofer\u0103 un cadru pentru organizarea replic\u0103rii datelor \u00een SQLite. Litestream nu necesit\u0103 modific\u0103ri \u00een SQLite \u0219i poate func\u021biona cu orice aplica\u021bie care utilizeaz\u0103 aceast\u0103 bibliotec\u0103. Replicarea este gestionat\u0103 de un proces de fundal care urm\u0103re\u0219te modific\u0103rile din fi\u0219ierele bazei de date \u0219i le transfer\u0103 \u00eentr-un alt fi\u0219ier sau \u00een stocare extern\u0103. Codul proiectului este scris \u00een limbajul Go \u0219i este distribuit sub licen\u021ba Apache 2.0. <\/p>\n
Toat\u0103 interac\u021biunea cu baza de date se realizeaz\u0103 prin intermediul API-ului standard SQLite, adic\u0103 Litestream nu interfereaz\u0103 direct \u00een func\u021bionarea acesteia, nu afecteaz\u0103 performan\u021ba \u0219i nu poate deteriora con\u021binutul bazei de date, ceea ce diferen\u021biaz\u0103 favorabil Litestream de solu\u021bii precum Rqlite \u0219i Dqlite. Modific\u0103rile sunt urm\u0103rite prin activarea jurnalului WAL (\"Write-Ahead Log\") \u00een SQLite. Pentru a economisi spa\u021biu de stocare, sistemul agreg\u0103 periodic fluxul de modific\u0103ri \u00een instantanee (snapshots) ale bazei de date, peste care \u00eencep s\u0103 se acumuleze alte modific\u0103ri. Timpul de creare a instantaneelor este specificat \u00een set\u0103ri, de exemplu, se pot forma instantanee o dat\u0103 pe zi sau o dat\u0103 pe or\u0103. <\/p>\n
Printre principalele domenii de aplicare ale Litestream se num\u0103r\u0103 organizarea copiilor de siguran\u021b\u0103 sigure \u0219i distribu\u021bia sarcinii de citire pe mai multe servere<\/a>. Se suport\u0103 transferul fluxului de modific\u0103ri \u00een stoc\u0103ri Amazon S3, Azure Blob Storage, Backblaze B2, DigitalOcean Spaces, Scaleway Object Storage, Google Cloud Storage, Linode Object Storage sau pe orice host extern care suport\u0103 protocolul SFTP. \u00cen caz de deteriorare a con\u021binutului bazei de date principale, copia de rezerv\u0103 poate fi restaurat\u0103 dintr-o stare corespunz\u0103toare unui moment specific, unei modific\u0103ri anume, ultimei modific\u0103ri sau unei instantanee specificate. \u0411\u0435\u043d \u0414\u0436\u043e\u043d\u0441\u043e\u043d (Ben Johnson), \u0430\u0432\u0442\u043e\u0440 NoSQL-\u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430 BoltDB, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u043f\u0440\u043e\u0435\u043a\u0442 Litestream, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u043d\u0430\u0434\u0441\u0442\u0440\u043e\u0439\u043a\u0443 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0435\u043f\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 SQLite. Litestream \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 SQLite \u0438 \u043c\u043e\u0436\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0441 \u043b\u044e\u0431\u044b\u043c\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u043c\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u043c\u0438 \u0434\u0430\u043d\u043d\u0443\u044e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443. \u0420\u0435\u043f\u043b\u0438\u043a\u0430\u0446\u0438\u0435\u0439 \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442\u0441\u044f \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0439 \u0444\u043e\u043d\u043e\u0432\u044b\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 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Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"