銆�銆�Berkeley DB鏄竴鍊嬮枊鏀炬簮浠ｇ⒓鐨勫収(n猫i)宓屽紡鏁�(sh霉)鎿�(j霉)搴鐞嗙郴绲�(t菕ng)锛岃兘澶犵偤鎳�(y墨ng)鐢ㄧ▼搴忔彁渚涢珮鎬ц兘鐨勬暩(sh霉)鎿�(j霉)绠＄悊鏈嶅嫏(w霉)銆傛噳(y墨ng)鐢ㄥ畠绋嬪簭鍝″彧闇�瑕佽(di脿o)鐢ㄤ竴浜涚啊鍠殑API灏卞彲浠ュ畬鎴愬皪鏁�(sh霉)鎿�(j霉)鐨勮í鍟忓拰绠＄悊銆�
銆�銆�Berkeley DB鏄敱缇庡湅Sleepycat Software鍏徃闁嬬櫦(f膩)鐨勪竴濂楅枊鏀炬簮纰肩殑宓屽叆寮忔暩(sh霉)鎿�(j霉)搴殑绋嬪簭搴紙database library锛�锛屽畠鐐烘噳(y墨ng)鐢ㄧ▼搴忔彁渚涘彲浼哥府鐨勩�侀珮鎬ц兘鐨�銆佹湁浜嬪嫏(w霉)淇濊鍔熻兘鐨勬暩(sh霉)鎿�(j霉)绠＄悊鏈嶅嫏(w霉)銆侭erkeley DB鐐烘暩(sh霉)鎿�(j霉)鐨勫瓨鍙栧拰绠＄悊鎻愪緵浜嗕竴绲勭啊娼旂殑鍑芥暩(sh霉)瑾�(di脿o)鐢ˋPI鎺ュ彛銆�
銆�銆�瀹冩槸涓�鍊嬬稉(j墨ng)鍏哥殑C-library妯″紡鐨則oolkit锛岀偤绋嬪簭鍝℃彁渚涘唬娉涜睈瀵岀殑鍑芥暩(sh霉)闆�锛屾槸鐐烘噳(y墨ng)鐢ㄧ▼搴忛枊鐧�(f膩)鑰呮彁渚涘伐妤�(y猫)绱氬挤搴︾殑鏁�(sh霉)鎿�(j霉)搴湇鍕�(w霉)鑰岃ō(sh猫)瑷堢殑銆�
銆�銆�鍏朵富瑕佺壒榛炲涓嬶細
銆�銆�宓屽叆寮忥紙Embedded锛夛細瀹冪洿鎺ラ張鎺ュ埌鎳�(y墨ng)鐢ㄧ▼搴忎腑锛岃垏鎳�(y墨ng)鐢ㄧ▼搴忛亱琛屼簬鍚屾ǎ鐨勫湴鍧�绌洪枔涓�锛屽洜姝�锛岀劇璜栨槸鍦ㄧ恫(w菐ng)绲�(lu貌)涓婁笉鍚岃▓绠楁涔嬮枔閭勬槸鍦ㄥ悓涓�鑷鸿▓绠楁鐨勪笉鍚岄�茬▼涔嬮枔锛屾暩(sh霉)鎿�(j霉)搴搷浣滃苟涓嶈姹傞�茬▼闁撻�氳▕銆�
銆�銆�Berkeley DB鐐哄绋法绋嬭獮瑷�鎻愪緵浜咥PI鎺ュ彛锛屽叾涓寘鎷珻銆丆++銆丣ava銆丳erl銆乀cl銆丳ython鍜孭HP锛屾墍鏈夌殑鏁�(sh霉)鎿�(j霉)搴搷浣滈兘鍦ㄧ▼搴忓韩鍏�(n猫i)閮ㄧ櫦(f膩)鐢熴�傚鍊嬮�茬▼锛屾垨鑰呭悓涓�閫茬▼鐨勫鍊嬬窔绋嬪彲鍚屾檪浣跨敤鏁�(sh霉)鎿�(j霉)搴�锛屾湁濡傚悇鑷柈鐛ㄤ娇鐢�锛屽簳灞ょ殑鏈嶅嫏(w霉)濡傚姞閹栥�佷簨鍕�(w霉)鏃ュ織銆佸叡浜珐娌栧崁(q奴)绠＄悊銆佸収(n猫i)瀛樼鐞嗙瓑绛夐兘鐢辩▼搴忓韩閫忔槑鍦板煼(zh铆)琛�銆�
銆�銆�杓曚究闈堟椿锛圥ortable锛夛細瀹冨彲浠ラ亱琛屼簬骞句箮鎵�鏈夌殑UNIX鍜孡inux绯荤当(t菕ng)鍙婂叾璁婄ó绯荤当(t菕ng)銆乄indows鎿嶄綔绯荤当(t菕ng)浠ュ強澶氱ó宓屽叆寮忓鏅傛搷浣滅郴绲�(t菕ng)涔嬩笅銆傚畠鍦�32浣嶅拰64浣嶇郴绲�(t菕ng)涓婂潎鍙亱琛岋紝宸茬稉(j墨ng)琚ソ澶氶珮绔殑鍥犵壒缍�(w菐ng)鏈嶅嫏(w霉)鍣�銆佽嚭寮忔銆佹帉涓婇浕鑵�銆佹闋傜洅銆佺恫(w菐ng)绲�(lu貌)浜ゆ彌姗熶互鍙婂叾浠栦竴浜涙噳(y墨ng)鐢ㄩ牁(l菒ng)鍩熸墍閲囩敤銆備竴鏃erkeley DB琚張鎺ュ埌鎳�(y墨ng)鐢ㄧ▼搴忎腑锛岀祩绔敤鎴朵竴鑸牴鏈劅瑕轰笉鍒版湁涓�鍊嬫暩(sh霉)鎿�(j霉)搴郴绲�(t菕ng)瀛樺湪銆�
銆�銆�鍙几绺紙Scalable锛夛細閫欎竴榛炶〃鐝�(xi脿n)鍦ㄥ緢澶氭柟闈�銆侱atabase library鏈韩鏄緢绮剧啊鐨勶紙灏戜簬300KB鐨勬枃鏈┖闁擄級锛屼絾瀹冭兘澶犵鐞嗚(gu墨)妯￠珮閬�(d谩)256TB鐨勬暩(sh霉)鎿�(j霉)搴�銆傚畠鏀寔楂樺苟鐧�(f膩)搴︼紝鎴愬崈涓婅惉鍊嬬敤鎴跺彲鍚屾檪鎿嶇副鍚屼竴鍊嬫暩(sh霉)鎿�(j霉)搴�銆侭erkeley DB鑳戒互瓒冲灏忕殑绌洪枔鍗犵敤閲忛亱琛屼簬鏈夊毚(y谩n)鏍肩磩鏉熺殑宓屽叆寮忕郴绲�(t菕ng)锛屼篃鍙互鍦ㄩ珮绔湇鍕�(w霉)鍣ㄤ笂鑰楃敤鑻ュ共GB鐨勫収(n猫i)瀛樺拰鑻ュ共TB鐨勭鐩ょ┖闁�銆�
銆�銆�Berkeley DB鐢变簲鍊嬩富瑕佺殑瀛愮郴绲�(t菕ng)妲�(g貌u)鎴�.鍖呮嫭: 瀛樺彇绠＄悊瀛愮郴绲�(t菕ng)銆佸収(n猫i)瀛樻睜绠＄悊瀛愮郴绲�(t菕ng)銆佷簨鍕�(w霉)瀛愮郴绲�(t菕ng)銆侀帠瀛愮郴绲�(t菕ng)浠ュ強鏃ュ織瀛愮郴绲�(t菕ng)銆�
銆�銆�鍏朵腑瀛樺彇绠＄悊瀛愮郴绲�(t菕ng)浣滅偤Berkeley DB鏁�(sh霉)鎿�(j霉)搴�茬▼鍖呭収(n猫i)閮ㄦ牳蹇冪祫浠�锛岃�屽叾浠栧瓙绯荤当(t菕ng)閮藉瓨鍦ㄤ簬Berkeley DB鏁�(sh霉)鎿�(j霉)搴�茬▼鍖呯殑澶栭儴銆�
銆�銆�姣忓�嬪瓙绯荤当(t菕ng)鏀寔涓嶅悓鐨勬噳(y墨ng)鐢ㄧ礆鍒�銆�
銆�銆�1.鏁�(sh霉)鎿�(j霉)瀛樺彇瀛愮郴绲�(t菕ng)
銆�銆�鏁�(sh霉)鎿�(j霉)瀛�?銆偹媍cess Methods锛夊瓙绯荤当(t菕ng)鐐哄壍(chu脿ng)寤哄拰瑷晱鏁�(sh霉)鎿�(j霉)搴枃浠舵彁渚涗簡澶氱ó鏀寔銆侭erkeley DB鎻愪緵浜嗕互涓嬪洓绋枃浠跺瓨鍎叉柟娉曪細鍝堝笇鏂囦欢銆丅妯�銆佸畾闀疯閷勶紙闅婂垪锛夊拰璁婇暦瑷橀寗锛堝熀浜庤閷勮櫉鐨勭啊鍠瓨鍎叉柟寮忥級锛屾噳(y墨ng)鐢ㄧ▼搴忓彲浠ュ緸涓伕鎿囨渶閬╁悎鐨勬枃浠剁祫绻旂祼(ji茅)妲�(g貌u)銆傜▼搴忓摗鍓�(chu脿ng)寤鸿〃鏅傚彲浠ヤ娇鐢ㄤ换鎰忎竴绋祼(ji茅)妲�(g貌u)锛屽苟涓斿彲浠ュ湪鍚屼竴鍊嬫噳(y墨ng)鐢ㄧ▼搴忎腑灏嶄笉鍚屽瓨鍎查鍨嬬殑鏂囦欢閫茶娣峰悎鎿嶄綔銆傚湪娌掓湁浜嬪嫏(w霉)绠＄悊鐨勬儏娉佷笅锛岃┎瀛愮郴绲�(t菕ng)涓殑妯″鍙柈鐛ㄤ娇鐢紝鐐烘噳(y墨ng)鐢ㄧ▼搴忔彁渚涘揩閫熼珮鏁堢殑鏁�(sh霉)鎿�(j霉)瀛樺彇鏈嶅嫏(w霉)銆傛暩(sh霉)鎿�(j霉)瀛樺彇瀛愮郴绲�(t菕ng)閬╃敤浜庝笉闇�浜嬪嫏(w霉)鍙渶蹇�熸牸寮忔枃浠惰í鍟忕殑鎳�(y墨ng)鐢�銆�
銆�銆�2.鍏�(n猫i)瀛樻睜绠＄悊瀛愮郴绲�(t菕ng)
銆�銆�鍏�(n猫i)瀛樻睜锛圡emory pool锛夊瓙绯荤当(t菕ng)灏岯erkeley DB鎵�浣跨敤鐨勫叡浜珐娌栧崁(q奴)閫茶鏈夋晥鐨勭鐞�銆傚畠鍏佽ū鍚屾檪瑷晱鏁�(sh霉)鎿�(j霉)搴殑澶氬�嬮�茬▼鎴栬�呴�茬▼鐨勫鍊嬬窔绋嬪叡浜竴鍊嬮珮閫熺珐瀛橈紝璨�(f霉)璨�(z茅)灏囦慨鏀瑰悗鐨勯爜瀵洖鏂囦欢鍜岀偤鏂拌(di脿o)鍏ョ殑闋佸垎閰嶅収(n猫i)瀛樼┖闁�銆傚畠涔熷彲浠ョ崹绔嬩簬Berkeley DB绯荤当(t菕ng)涔嬪锛屽柈鐛ㄨ鎳�(y墨ng)鐢ㄧ▼搴忎娇鐢紝鐐哄叾鑷繁鐨勬枃浠跺拰闋佸垎閰嶅収(n猫i)瀛樼┖闁�銆傚収(n猫i)瀛樻睜绠＄悊瀛愮郴绲�(t菕ng)閬╃敤浜庨渶瑕侀潏娲荤殑銆侀潰鍚戦爜鐨�銆佺珐娌栫殑鍏变韩鏂囦欢瑷晱鐨勬噳(y墨ng)鐢ㄣ��
銆�銆�3.浜嬪嫏(w霉)瀛愮郴绲�(t菕ng)
銆�銆�浜嬪嫏(w霉)锛圱ransaction锛夊瓙绯荤当(t菕ng)鐐築erkeley DB鎻愪緵浜嬪嫏(w霉)绠＄悊鍔熻兘銆傚畠鍏佽ū鎶婁竴绲勫皪鏁�(sh霉)鎿�(j霉)搴殑淇敼鐪嬩綔涓�鍊嬪師瀛愬柈浣嶏紝閫欑祫鎿嶄綔瑕佷箞鍏ㄥ仛锛岃涔堝叏涓嶅仛銆傚湪榛樿獚(r猫n)鐨勬儏娉佷笅锛岀郴绲�(t菕ng)灏囨彁渚涘毚(y谩n)鏍肩殑ACID浜嬪嫏(w霉)灞��锛屼絾鏄噳(y墨ng)鐢ㄧ▼搴忓彲浠ラ伕鎿囦笉浣跨敤绯荤当(t菕ng)鎵�浣滅殑闅旈洟淇濊瓑銆傝┎瀛愮郴绲�(t菕ng)浣跨敤鍏╂閹栨妧琛�(sh霉)鍜屽厛瀵棩蹇楃瓥鐣ヤ締淇濊瓑鏁�(sh霉)鎿�(j霉)搴暩(sh霉)鎿�(j霉)鐨勬纰烘�у拰涓�鑷存�с�傚畠涔熷彲浠ヨ鎳�(y墨ng)鐢ㄧ▼搴忓柈鐛ㄤ娇鐢ㄤ締灏嶅叾鑷韩鐨勬暩(sh霉)鎿�(j霉)鏇存柊閫茶浜嬪嫏(w霉)淇濊銆備簨鍕�(w霉)瀛愮郴绲�(t菕ng)閬╃敤浜庨渶瑕佷簨鍕�(w霉)淇濊瓑鏁�(sh霉)鎿�(j霉)鐨勪慨鏀圭殑鎳�(y墨ng)鐢�銆�
銆�銆�4.閹栧瓙绯荤当(t菕ng)
銆�銆�閹栵紙Locking锛夊瓙绯荤当(t菕ng)鐐築erkeley DB鎻愪緵閹栨鍒讹紝鐐虹郴绲�(t菕ng)鎻愪緵澶氱敤鎴惰畝鍙栧拰鍠敤鎴朵慨鏀瑰悓涓�灏嶈薄鐨勫叡浜帶鍒�銆傛暩(sh霉)鎿�(j霉)瀛樺彇瀛愮郴绲�(t菕ng)鍙埄鐢ㄨ┎瀛愮郴绲�(t菕ng)鐛插緱灏嶉爜鎴栬閷勭殑璁�瀵瑠(qu谩n)闄�锛涗簨鍕�(w霉)瀛愮郴绲�(t菕ng)鍒╃敤閹栨鍒朵締瀵︾従(xi脿n)澶氬�嬩簨鍕�(w霉)鐨勫苟鐧�(f膩)鎺у埗銆傝┎瀛愮郴绲�(t菕ng)涔熷彲琚噳(y墨ng)鐢ㄧ▼搴忓柈鐛ㄩ噰鐢�銆傞帠瀛愮郴绲�(t菕ng)閬╃敤浜庝竴鍊嬮潏娲荤殑銆佸揩閫熺殑銆佸彲瑷�(sh猫)缃殑閹栫鐞嗗櫒銆�
銆�銆�5.鏃ュ織瀛愮郴绲�(t菕ng)
銆�銆�鏃ュ織锛圠ogging锛夊瓙绯荤当(t菕ng)閲囩敤鐨勬槸鍏堝鏃ュ織鐨勭瓥鐣�锛岀敤浜庢敮鎸佷簨鍕�(w霉)瀛愮郴绲�(t菕ng)閫茶鏁�(sh霉)鎿�(j霉)鎭㈠京(f霉)锛屼繚璀夋暩(sh霉)鎿�(j霉)涓�鑷存�с�傚畠涓嶅ぇ鍙兘琚噳(y墨ng)鐢ㄧ▼搴忓柈鐛ㄤ娇鐢�锛屽彧鑳戒綔鐐轰簨鍕�(w霉)瀛愮郴绲�(t菕ng)鐨勮(di脿o)鐢ㄦā濉�銆�
銆�銆�浠ヤ笂骞鹃儴鍒嗘(g貌u)鎴愪簡鏁村�婤erkeley DB鏁�(sh霉)鎿�(j霉)搴郴绲�(t菕ng)銆傚悇閮ㄥ垎鐨勯棞(gu膩n)绯诲涓嬪湒鎵�绀猴細
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